For example, KCl, an ionic compound that contains K+ and Cl- ions , is named potassium chloride. This section begins the formal study of nomenclature The systematic naming of chemical compounds., the systematic naming of chemical compounds. Best answer 10 points. If the first element you "see" in the compound is found on the left side of the periodic table (i.e. 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. To name ionic compounds, we follow the steps below: 1. Finally, combine the two ions to form an electrically neutral compound. 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! unlocking this expert answer. “Ammonia” becomes “ammonium” when it takes on a positive charge. When naming ionic compounds, all of the information you’ll need is on the periodic table. This naming principle applies to other anions as well. If you have a polyatomic ion, use the Common Ion Table to find and write the formula and charge. 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. He began writing online in 2010, offering information in scientific, cultural and practical topics. Iron). Watch on YouTube. The name of a monatomic cation is simply the name of the element followed by the word ion. Here are the principal naming conventions for ionic compounds, along with examples to show how they are used: How to name ionic compounds with multiple ionic charges SNC2D1 Some metals are able to form more than one ion! Bess Ruff is a Geography PhD student at Florida State University. 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." 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). CuO2. 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. We use cookies to make wikiHow great. Before you start this video, it is helpful to know how to name an ionic compound based on its chemical formula. Consider the example FeO. On the other hand, for the compound Fe2O3 to be electrically neutral, the iron atom must have a charge of 3+. As expected, this article helped me in doing my homework. Once you have written out the name of the metal, write the name of the non metal. 30 seconds . Refer to the periodic table of elements to see what categories the elements in the compound belong to. take these steps to name ionic compounds. Ionic compounds are: Metals + non metals. Therefore, CuO2. Bess Ruff is a Geography PhD student at Florida State University. Thank you! Ionic compounds are formed of a metal (cation) and a non-metal (anion). 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. Ionic compounds are a type of chemical compound made up of metal cations (positive ions) and non-metal anions (negative ions). An ionic compound is named first by its cation and then by its anion. 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. How to write the names for binary ionic compounds. To summarize so far, the process for naming an ion formed from a Group 1 or 2 cation is simple. 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. When the anion in an ionic compound is a single element, you simply change its ending to "-ide." Let’s say the ionic compound you’re working with is NaCl. Basic compounds do not contain transition metals and contain only 2 ions. Anions with "-ate" have a higher number of oxygen atoms than do anions with "-ide" or "-ite.". The Cation Goes First. The terms “ferric” and “ferrous” are both use to refer to ions containing iron, since iron’s symbol is “Fe.”. SURVEY . ! Naming Ionic Compounds Containing Transition Metals If an ionic compound contains a transition metal, use Roman numerals to denote which ion it is. Q. I am confused about compounds like iron (2,3) oxide - things with both charges. Binary ionic compounds … For example, KCl, an ionic compound that contains K+ and Cl- ions, is named … Covalent compounds (compounds of non-metals like carbon dioxide and ammonia). Ionic compounds are made up of a metal cation (named first) and a non-metal anion (named second). As an additional step, you'll need to calculate the charge of the metal ion if you're working with a transition metal. The name of the ionic compound indicates the charge of the cation in brackets after its name. article did a great job in creating this with simple, but very understandable, steps. answer choices . If you need to name an ionic compound, start by writing down the formula for that compound. First, write out the name of the metal, followed by the name of the non-metal with its new ending. Or sulfide? It gets more complicated if you have polyatomic ions, since the charge determination involves some calculation. True. If you want to know how to name ionic compounds in a variety of situations, just follow these steps. Second, look at the subscript of each element to determine which prefix to use. Write down the formula of the ionic compound. Remember to only use the Roman numeral when you're writing out the ionic compound’s name and not when writing the formula. 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. +2 state has suffix '-ous', and +3 has '-ic' (for the central atom eg. Not sulfite? This chemistry video tutorial explains how to name ionic compounds. 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. (If an element does not have a prefix, assume that the subscript is “1.” Ionic compounds contain a metal and a nonmetal. Ionic compounds are named by stating the cation first, followed by the anion. By using our site, you agree to our. Ionic compounds consist of cations (positive ions) and anions (negative ions). Write the name and charge for the non-metal. Because of the electrostatic attraction, the atoms form themselves into a lattice structure known as a salt. Know what makes a compound ionic. This article was co-authored by Bess Ruff, MA. 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. wikiHow is where trusted research and expert knowledge come together. In this lesson, you will learn how to start with the name of the ionic compound and turn it in to a chemical formula. If the anion has "-ide" in its name, it has no oxygen atoms. Steps Basic Ionic Compounds. answer choices . If you look at the group numbers of non-transition metals, they can tell you charges. Transition metals take a little more work to name in ionic compounds, since their oxidation numbers (or their charges) are constantly changing. For example, iron can form the ferric ion (Fe3+) and the ferrous ion (Fe2+). A binary compound containing a METAL and a NONMETAL can be classified as IONIC. For example, K +1 is called the potassium ion, just as K is called the potassium atom. For ionic compounds, the name of the cation comes first, followed by the name of the anion. Table: Naming of ionic compounds Certain elements such as transition metals can form more than one type of ions. The cation is the positively charged particle in an ionic compound, which means it's metallic. Consult the periodic table of elements. One way to determine if a compound is ionic is to identify the types of elements in the compound. The cation is the positively charged particle in an ionic compound, which means it's metallic. 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. 30 seconds . 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. Write the name of transition metal as shown on the Periodic Table. 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. Anions typically belong to groups 15, 16, or 17 on the periodic table. Ammonia itself is neutrally charged. When writing the name of ionic compounds the name of the metal is always written first. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. The anion is the negatively charged particle in the compound. Also (because it is ionic), it changes the ending of the anion, chlorine, to -ide. % of people told us that this article helped them. K + = Potassium Ca 2+ = Calcium Al 3+ = Aluminum. 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. 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. 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. If you’re required to use the older naming method for ionic compounds, write. Then, identify the anion and write down its symbol and charge. Keep up the good work and thank you. In this video, we'll walk through this process for the ionic compound calcium bromide. How did you work out that SO4 was sulfate? Can you clarify, please? Ferrous (i.e. This article has been viewed 501,421 times. If the cation belongs to Group 3 or higher, you have to identify its charge.