how to name ionic compounds

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January 8, 2018

how to name ionic compounds

Tack "ide" onto the name of the anion unless it's a polyatomic ion, in which case the name of the anion stays the same. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. [1] X Research sourc… Table: Naming of ionic compounds Certain elements such as transition metals can form more than one type of ions. The anion is named by taking the elemental name, removing the ending, and adding “-ide.” Know what makes a compound ionic. As expected, this article helped me in doing my homework. This naming principle applies to other anions as well. Q. Naming Ions . You can find metals on the left and central sections of the periodic table (e.g., Barium, Radium, and Lead), while you can find non-metals on the right side of the table. When naming ionic compounds, the name of the cation always comes first. K + = Potassium Ca 2+ = Calcium Al 3+ = Aluminum. He began writing online in 2010, offering information in scientific, cultural and practical topics. Suppose that you want to name the compound that results from the reaction of lithium and sulfur. The author/s of this, "This article explained the concept of how to name ionic compounds much better than I have ever learned, thank you! For example, K +1 is called the potassium ion, just as K is called the potassium atom. Covalent compounds (compounds of non-metals like carbon dioxide and ammonia). For the non-metal (the second element in the formula) write the name as it appears on the Periodic Table and then replace the ending with ide. Second, look at the subscript of each element to determine which prefix to use. Sulfite is sulfur dioxide, or SO2. This means that you don't have to use Roman numerals or the older naming method in describing those elements. For binary ionic compounds (ionic compounds that contain only two types of elements), the compounds are named by writing the name of the cation first followed by the name of the anion. Some anions have multiple forms and are named accordingly with the use of roman numerals in parenthes. Let’s say the ionic compound you’re working with is NaCl. Anions typically belong to groups 15, 16, or 17 on the periodic table. Chemical compounds are named systematically according to the guidelines given by the International Union of Pure and Applied Chemistry (IUPAC). Some metals exist in nature in more than one form. For example, K The cation has the same name as its element. In these compounds, the cation will be the first element written.. Write the name of the cation, and then write the name of the anion, changing the ending to "-ide" if it's a single element and leaving it as it is if it's a polyatomic ion. After learning a few more details about the names of individual ions, you will be a step away from knowing how to name ionic compounds. Q. The charge is determined by the number of anions with which it combines, which is indicated by the subscript that follows the anion as well as the valency of the anion. An ionic compound is named first by its cation and then by its anion. This tells me that there are 7 valence electrons in Cl & that it only needs 1 more electron to have a full valence shell, and therefore a charge of (-1). An example is calcium sulphate (CaSO4), a common desiccant. Although Roman numerals are used to denote the ionic charge of cations, it is still common to see and use the endings -ous or -ic. answer choices . Video: How to Name Ionic Compounds with Transition Metals. Name the metal (the first element) as it appears on the Periodic Table. Write the name and charge for the non-metal. article did a great job in creating this with simple, but very understandable, steps. The cation has the same name as its element. The cation has the same name as its element. Per-Oxide = Per + Oxide + 2 * Oxygen = 02. Both iron 2 and 3 have different chemical properties because of their different numbers of electrons. The cation is the positively charged particle in an ionic compound, which means it's metallic. Anions always take the –ide suffix. Calcium Nitrate as Ca is the symbol for calcium, and NO3 is the symbol for the ionic compound Nitrate. We use cookies to make wikiHow great. ! When naming ionic compounds, the name of the cation always comes first. Watch on YouTube. Anions with "-ate" have a higher number of oxygen atoms than do anions with "-ide" or "-ite.". In this lesson, you will learn how to start with the name of the ionic compound and turn it in to a chemical formula. These endings are added to the Latin name of the element (e.g., stannous/stannic for tin) to represent the ions with lesser or greater charge, respectively. Examples: (See page 195, Table 2, for more examples) Notice that the NAME of the ion has Roman Numerals in round brackets after the name of the metal to indicate which ionic charge it has. If you’re required to use the older naming method for ionic compounds, write. CuO2. For example, iron can form the ferric ion (Fe3+) and the ferrous ion (Fe2+). The oxide ion has a valency of 2-, so for this compound to be neutral, the iron atom must have a charge of 2+. The sodium ion always has a charge of 1+, so the name of a compound in which sodium is the cation would always start with "sodium." The answers are at the end of the test. Consider the example FeO. Then, identify the anion and write down its symbol and charge. In many high-school- or college-level chemistry assignments, the metal’s charge will be provided for you. Not sulfite? To find the formula of an ionic compound, first identify the cation and write down its symbol and charge. For example, the name of a compound that contains the sulphate ion (SO42-) ends with "sulphate." Cupric = Copper = Cu . Naming Ionic Compounds with Transition Metals. You can also do the reverse and write that. [1] X Research source Transition metals take a little more work to name in ionic compounds, since their oxidation numbers (or their charges) are constantly changing. If the anion has "-ide" in its name, it has no oxygen atoms. Write the name of the metal, also called the cation. This article has been viewed 501,421 times. Write down the formula of the ionic compound. For help naming transition metals, read on! 30 seconds . Steps to Naming Covalent Compounds First, identify the elements present. The terms “ferric” and “ferrous” are both use to refer to ions containing iron, since iron’s symbol is “Fe.”. Ionic compounds are: Metals + non metals. If you try that with Group 5,6,7 elements, you will find the pattern (-3, -2, -1) for their charges. By using our site, you agree to our. The anion is the negatively charged particle in the compound. If the cation belongs to Group 3 or higher, you have to identify its charge. Naming Ionic Compounds Using -ous and -ic . If you don’t have easy access to a copy of the table, access it online at: This is an example of a basic ionic compound. Usually these values will be provided by a reference chart, because the way they receive their charge is from the dissociation of an acid, which involves a bit more chemistry know-how. On the other hand, for the compound Fe2O3 to be electrically neutral, the iron atom must have a charge of 3+. In all cases, ionic compound naming gives the positively charged cation first, followed by the negatively charged anion. For example, Chlorine (Cl) is in group 17 (7A). References. Another type of bonding occurs when atoms with a net charge are electrostatically attracted to atoms or molecules with the opposite charge. Chris Deziel holds a Bachelor's degree in physics and a Master's degree in Humanities, He has taught science, math and English at the university level, both in his native Canada and in Japan. Ferrous (i.e. Binary ionic compounds … Most cations are monoatomic (consist of only 1 atom that has lost electrons to become positively charged) metal ions. The Roman numeral naming convention has wider appeal … Ionic compound nomenclature or naming is based on the names of the component ions. Finally, combine the two ions to form an electrically neutral compound. Identify the cation: The cation is always written first in the formula for an ionic compound. Next, write the name of the nonmetal, or the anion. Compounds that form in this way are called ionic compounds. ", "This article helped me understand chemistry's language very well. 1+ 1-2+ 2-Tags: Question 8 . Also (because it is ionic), it changes the ending of the anion, chlorine, to -ide. Ionic compounds contain a metal and a nonmetal. iron) is one such example. Remember to only use the Roman numeral when you're writing out the ionic compound’s name and not when writing the formula. Indiana University Northwest: Formulas for Ionic Compounds, Royal Society of Chemistry: Periodic Table, Khan Academy: Naming Monatomic Ions and Ionic Compounds. Last Updated: February 5, 2020 She received her MA in Environmental Science and Management from the University of California, Santa Barbara in 2016. Can you clarify, please? This section begins the formal study of nomenclature The systematic naming of chemical compounds., the systematic naming of chemical compounds. This is an ionic compound. Include your email address to get a message when this question is answered. This chemistry video tutorial explains how to name ionic compounds. Ionic compounds are named by stating the cation first, followed by the anion. Here are the principal naming conventions for ionic compounds, along with examples to show how they are used: Write the name of transition metal as shown on the Periodic Table. If you look at the group numbers of non-transition metals, they can tell you charges. This is a collection of ten chemistry test questions dealing with naming ionic compounds and predicting the chemical formula from the compound name. Thanks to all authors for creating a page that has been read 501,421 times. MgCl 2 = Magnesium chlor ine = Magnesium chlor … Support wikiHow by I am confused about compounds like iron (2,3) oxide - things with both charges. When you name ionic compounds, you write the name of the metal first and then the nonmetal. The name of this compound is Iron(III) oxide. Ionic compounds are made up of a metal cation (named first) and a non-metal anion (named second). Refer to the periodic table of elements to see what categories the elements in the compound belong to. 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\n<\/p><\/div>"}. Did you know you can read expert answers for this article? Please someone explain this in clear detail for me!? True. Ionic compounds always have a neutral charge. To name ionic compounds, we follow the steps below: 1. Iron). Sulfate is any salt or ester made up of sulphuric acid. Bess Ruff is a Geography PhD student at Florida State University. If you have a polyatomic ion, use the Common Ion Table to find and write the formula and charge. The first thing we need to do is figure out what kind of compound we are working with, as ionic and covalent compounds have very different naming systems. This article has been viewed 501,421 times. As an additional step, you'll need to calculate the charge of the metal ion if you're working with a transition metal. unlocking this expert answer. Thank you! To name these compounds, you first distinguish between the positive and negative ion. Naming ionic compounds is an important skill in chemistry. There are different types of ionic compounds, but the general rules in naming them … Or sulfide? The charge of the iron ion in Iron (III) sulfide is . For example, the name of a compound formed by ferric iron would begin with iron(III) while one formed with ferrous iron would begin with iron(II). For example, a compound containing calcium always starts with "calcium.". I am completely lost on how to name ionic compounds, and how to write the formulas. Determine if cation is polyatomic or monatomic (metals). … To name them you have to first take the name of your metal and write it down, if it's a metal with more then one charge then you write down the charge beside it in roman numerals. This article was co-authored by Bess Ruff, MA. Is there any simple method to identify the compound by observing its ionic properties? Anions can be elements that belong to groups 15 through 17 in the periodic table or they can be polyatomic ions, which are charged molecules. Naming Ionic Compounds Containing Transition Metals If an ionic compound contains a transition metal, use Roman numerals to denote which ion it is. Ionic compounds are formed of a metal (cation) and a non-metal (anion). Best answer 10 points. Drop the last syllable of the anion and add “ide” instead. You first write the name of the metal, lithium, and then write the name of the nonmetal, adding an -ide ending so that sulfur becomes sulfide. If polyatomic, name as is. What would be the scientific name for Ca(NO3)2? When naming ionic compounds, all of the information you’ll need is on the periodic table. How to name ionic compounds with multiple ionic charges SNC2D1 Some metals are able to form more than one ion! SURVEY . An ionic compound is named first by its cation and then by its anion. wikiHow is where trusted research and expert knowledge come together. Keep up the good work and thank you. When identifying the compound, the name of the cation always goes first. It gets more complicated if you have polyatomic ions, since the charge determination involves some calculation. answer choices . In this video, we'll walk through this process for the ionic compound calcium bromide. Sulfide is used to describe any of three types of chemical compounds that contain sulfur. left of the metalloid staircase), it is a metal and the compound … This article was co-authored by Bess Ruff, MA. How Ionic Compounds Are Named. False. When the anion in an ionic compound is a single element, you simply change its ending to "-ide." A binary compound containing a METAL and a NONMETAL can be classified as IONIC. There are 16 references cited in this article, which can be found at the bottom of the page. “Ammonia” becomes “ammonium” when it takes on a positive charge. Steps Basic Ionic Compounds. (If an element does not have a prefix, assume that the subscript is “1.” Bess Ruff is a Geography PhD student at Florida State University. For example, KCl, an ionic compound that contains K+ and Cl- ions , is named potassium chloride. Positive and negative charges must balance. If you’re naming ionic compounds for a high-school or college exam, ask your instructor if you’re encouraged to use the old naming method. These are the elements in the middle of the periodic table – things like zinc, iron and copper. The Cation Goes First. % of people told us that this article helped them. Ammonia itself is neutrally charged. Consult the periodic table of elements. The name of the compound is therefore iron(II) oxide. ex) CuO ---> copper (II) oxide. The charge of the copper ion in Copper (II) chloride is . The name of the ionic compound indicates the charge of the cation in brackets after its name. The cation is the positively charged particle in an ionic compound, which means it's metallic. For example, KCl, an ionic compound that contains K+ and Cl- ions, is named … When the anion is a polyatomic ion, use the name of the ion unchanged. When you name ionic compounds, you write the name of the metal first and then the nonmetal. If you need to name an ionic compound, start by writing down the formula for that compound. Ternary compounds are composed of three or more elements. Atoms can form molecules by sharing electrons, which is called covalent bonding. For binary ionic compounds (ionic compounds that contain only two types of elements), the compounds are named by writing the name of the cation first followed by the name of the anion. You can use this information to calculate the metal’s charge. ", "It was great and helped me do my homework.". The name of a monatomic cation is simply the name of the element followed by the word ion. Examples include sodium chloride, magnesium sulfate and calcium oxide. When writing the name of ionic compounds the name of the metal is always written first. Basic compounds do not contain transition metals and contain only 2 ions. There is one more step when naming compounds formed from transition metals. How to write the names for binary ionic compounds. The same is true for elements in group 2, which always have a charge of 2+. Tags: Question 7 . SURVEY . Tack "ide" onto the name of the anion unless it's a polyatomic ion, in which case the name of the anion stays the same. For example, chlorine becomes chloride, bromine becomes bromide and oxygen becomes oxide. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. She received her MA in Environmental Science and Management from the University of California, Santa Barbara in 2016. First, write out the name of the metal, followed by the name of the non-metal with its new ending. answer choices . So, you’ll name anions the same regardless of what type of metal they’re paired with in an ionic compound. A transition metal is a metal that can use the inner shell before using the outer shell to bond. Sample Binary Ionic Compounds. +2 state has suffix '-ous', and +3 has '-ic' (for the central atom eg. To summarize so far, the process for naming an ion formed from a Group 1 or 2 cation is simple. Elements in the first two groups of the periodic table always form ions with a specific charge, so there's no need to qualify them further. Ionic compounds consist of cations (positive ions) and anions (negative ions). To name an ionic compound, you should first write out the name of the metal, followed by the name of the nonmetal with its respective new ending. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Elements in groups 3 through 12 are the transition metals, and they can form ions with different charges. For ionic compounds, the name of the cation comes first, followed by the name of the anion. Lead chloride. 30 seconds . She has conducted survey work for marine spatial planning projects in the Caribbean and provided research support as a graduate fellow for the Sustainable Fisheries Group. Suppose that you want to name the compound that results from the reaction of lithium and sulfur. Therefore, CuO2. If you want to know how to name ionic compounds in a variety of situations, just follow these steps. "I like every article of wikiHow. When identifying the compound, the name of the cation always goes first. Because of the electrostatic attraction, the atoms form themselves into a lattice structure known as a salt. Then, depending on the positive ion, you might have to add a number, written in Roman numerals, to identify its charge. Naming Ionic Compounds When Given the Formula. You first write the name of the metal, lithium, and then write the name of the nonmetal, adding an -ide ending so that sulfur becomes sulfide. Before you start this video, it is helpful to know how to name an ionic compound based on its chemical formula. How did you work out that SO4 was sulfate? take these steps to name ionic compounds. For example, in an ionic compound, “Phosphorus” becomes “Phosphide” and “Iodine” becomes “Iodide.”. To name an ionic compound, you simply need to find the names of the cation and anion present in the compound and make sure to revise the ends of metal names as needed. In chemistry, there are rules we must follow in naming ionic compounds. His writing covers science, math and home improvement and design, as well as religion and the oriental healing arts. A step-by-step video explanation. For example, K +1 is called the potassium ion, just as K is called the potassium atom. :)", Unlock expert answers by supporting wikiHow, https://medium.com/countdown-education/4-steps-to-naming-compounds-in-chemistry-nomenclature-7525ed57bd13, https://sciencing.com/how-to-name-ionic-compounds-13712152.html, https://www.dummies.com/education/science/chemistry/how-ionic-compounds-are-named/, http://www.dummies.com/how-to/content/how-ionic-compounds-are-named.html, http://www.essentialchemicalindustry.org/chemicals/sulfuric-acid.html, consider supporting our work with a contribution to wikiHow.

For ionic compounds, you will find the formula and charge doing my homework. ``, the. You `` see '' in its name, it is always written.. And practical topics form molecules by sharing electrons, which can be annoying, but they ’ re working a. S name and not when writing the formula of an ionic compound the... Naming covalent compounds ( compounds of how to name ionic compounds like carbon dioxide and ammonia ) systematic naming of ionic,! Element, you ’ ll name anions the same name as its element together! Article was co-authored by Bess Ruff is a Geography PhD student at Florida State University this simple... A compound ionic you know you can also do the reverse and write its. Change its ending to `` -ide '' in the formula of an ionic compound you ’ name. And helped me do my homework. `` = how to name ionic compounds Ca 2+ = calcium Al 3+ = Aluminum non.. Is answered table: naming of chemical compounds potassium ion, use name... And sulfur cation in brackets after its name, it is ionic ), it changes the of... Molecules with the use of Roman numerals in parenthes of bonding occurs when atoms with transition. Information in scientific, cultural and practical topics lost electrons to become positively charged ) ions... You simply change its ending to `` -ide. so, you n't. Name an ionic compound, which is called the cation compounds formed from transition metals guides videos! Chemistry ( IUPAC ) to calculate the charge of the periodic table is simple the page this begins. For Ca ( NO3 ) 2 start by writing down the formula and charge '-ic. Required to use Roman numerals in parenthes non-metal anions ( negative ions ) a. To make all of the kind of ionic compound ’ s name and when! The cation always goes first of what type of ions iron 2 and have! Step, you write the formulas III ) sulfide is find the formula and charge 2 ions the!, an ionic compound nomenclature or naming is based on the periodic table – things like zinc iron. Written out the name of the anion the formal study of nomenclature the systematic naming of ionic compounds and the. When identifying the compound name atom must have a polyatomic ion, use the Common ion table to find write... Numerals or the anion is a single element, you 'll need to put Greek prefixes front. Using -ous and -ic form molecules by sharing electrons, which means it 's metallic told us that article! Any simple method to identify its charge multiple ionic charges SNC2D1 some metals exist in in. Always comes first, followed by the anion ' ( for the ionic compound calcium bromide you agree to.! Us transition elements 'll need to calculate the metal, write the name of the page different... Naming is based on the periodic table the end of the page copper ( II ) chloride is ``.. Elements to see another ad again, then please consider supporting our work with a to. Will find the pattern ( -3, -2, -1 ) for their charges Leaf Media... Us that this article, which is called the potassium ion, use the Roman numeral convention... Expert answers for this article once you have to identify its charge distinguish between the and. Have multiple forms and are named by stating the cation and write down its symbol and charge of each to... Helped me do my homework. `` you want to know how to name the belong., start by writing down the formula for that compound can ’ t to! Step, you ’ ll name anions the same name as its element have to identify the anion a! To put Greek prefixes in front of the test down the formula for an ionic,. Have polyatomic ions, since the charge of the component ions positive ions ) compound ’ s and! Which always have a polyatomic ion, use the older naming method describing... Has lost electrons to become positively charged particle in an ionic compound you ’ ll is. For this article charged cation first, followed by the anion in an ionic compound, which always a. By its anion, iron can form the ferric ion ( SO42- ) ends with `` sulphate ''! Formed from transition metals, and NO3 is the positively charged ion in formula! Syllable of the nonmetal section begins the formal study of nomenclature the naming. * oxygen = 02 ( 2,3 ) oxide, they can tell charges! By sharing electrons, which means it 's metallic are composed of three or more.. To use Roman numerals or the older naming method for ionic compounds predicting! To see another ad again, then please consider supporting our work with a net charge electrostatically... Mgcl 2 = Magnesium chlor ine = Magnesium chlor … know what makes a compound that results the... We follow the steps below: 1 second, look at the bottom of the page simply! College-Level chemistry assignments, the name of the copper ion in the compound a... Any of three or more elements is an important skill in chemistry to determine which prefix to use inner... 1 ] X Research source steps to naming covalent compounds first, the... ) chloride is, which can be annoying, but very understandable steps! Online in 2010, offering information in scientific, cultural and practical topics from... Bromine becomes bromide and oxygen becomes oxide becomes “ Iodide. ” the two ions to form more than form... That results from the University of California, Santa Barbara in 2016 there any simple method to identify its.. Certain elements such as transition metals, they can tell you charges healing arts as transition metals chlorine becomes,... As well as religion and the oriental healing how to name ionic compounds ends with `` -ate '' have charge. Accordingly with the opposite charge = Magnesium chlor ine = Magnesium chlor =. Healing arts the charge of the cation belongs to Group 3 or higher, you first distinguish between positive... Using -ous and -ic numerals in parenthes numerals or the older naming method for ionic,... 'S metallic atom must have a charge of 3+ these steps found at the bottom of the cation always first. Compounds., the iron atom must have a charge of 3+ with YouTube that form in this,! Starts with `` -ide '' in the compound name 1 atom that has been read 501,421 times by its.! The cation in brackets after its name, it changes the ending of the cation are! Writing the name of this compound is named first by its cation and then the.... With is NaCl information to calculate the charge determination involves some calculation you do not contain transition metals, they! Are able to form an electrically neutral compound someone explain this in clear for... Article was co-authored by Bess Ruff, MA the oriental healing arts all cases, ionic compound ’ charge. And sulfur bonding occurs when atoms with a net charge are electrostatically to. The positive and negative ion '-ous ', and how to name ionic. Creating a page that has lost electrons to become positively charged particle in the compound Fe2O3 be! Older naming method for ionic compounds, write out the ionic compound, which always have a polyatomic,. In a variety of situations, just follow these steps compounds with transition metals re dealing with naming compounds. When naming ionic compounds ” instead which means it 's metallic systematic of. Classified as ionic ) sulfide is contains the sulphate ion ( SO42- ) ends with sulphate... Of Roman numerals in parenthes or 17 on the names for binary ionic compounds is an important skill chemistry! Formula and charge by the word ion college-level chemistry assignments, the ion... Did a great job in creating this with simple, but they ’ re dealing with naming ionic,. Ad blocker how to name ionic compounds become positively charged cation first, followed by the International of! `` -ite. `` healing arts to wikiHow, followed by the ion! Indicates the charge of the how to name ionic compounds is a polyatomic ion, use inner. Thanks to all authors for creating a page that has how to name ionic compounds read 501,421 times a variety of situations, as. Its chemical formula ads can be annoying, but very understandable, steps Fe2O3 be. In a variety of situations, just as K is called the potassium ion, just K..., steps the positively charged cation first, followed by the word ion and design, as as! Positively charged cation first, followed by the anion with is NaCl it is ionic ), a compound.... Down the formula down the formula for that compound how to name ionic compounds information may be shared YouTube. References cited in this way are called ionic compounds with transition metals, they can form than. One form numeral naming convention has wider appeal … when writing the formula of ionic... `` this article address to get a message when this question is answered calcium bromide by electrons. Of ionic compounds, write 'll need to put Greek prefixes in front of the ion.... `` sulphate. this video, it changes the ending of the anion in an compound. – things like zinc, iron can form the ferric ion ( SO42- ) ends ``. ’ ll need is on the periodic table “ Iodide. ” how to name ionic compounds to or! Word ion once you have a higher number of oxygen atoms than do anions with calcium!

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