how to name ionic compounds

Watch on YouTube. Identify the cation: The cation is always written first in the formula for an ionic compound. Anions typically belong to groups 15, 16, or 17 on the periodic table. Ternary compounds are composed of three or more elements. In these compounds, the cation will be the first element written.. Drop the last syllable of the anion and add “ide” instead. For help naming transition metals, read on! Or sulfide? Some metals exist in nature in more than one form. The charge of the iron ion in Iron (III) sulfide is . Covalent compounds (compounds of non-metals like carbon dioxide and ammonia). Second, look at the subscript of each element to determine which prefix to use. 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. For example, the name of a compound that contains the sulphate ion (SO42-) ends with "sulphate." I am confused about compounds like iron (2,3) oxide - things with both charges. If you try that with Group 5,6,7 elements, you will find the pattern (-3, -2, -1) for their charges. An example is calcium sulphate (CaSO4), a common desiccant. First, write out the name of the metal, followed by the name of the non-metal with its new ending. Write the name of the metal, also called the cation. To find the formula of an ionic compound, first identify the cation and write down its symbol and charge. SURVEY . Can you clarify, please? It gets more complicated if you have polyatomic ions, since the charge determination involves some calculation. Refer to the periodic table of elements to see what categories the elements in the compound belong to. ", "It was great and helped me do my homework.". If you have a polyatomic ion, use the Common Ion Table to find and write the formula and charge. ex) CuO ---> copper (II) oxide. Naming Ionic Compounds Containing Transition Metals If an ionic compound contains a transition metal, use Roman numerals to denote which ion it is. This means that you don't have to use Roman numerals or the older naming method in describing those elements. When naming ionic compounds, the name of the cation always comes first. In all cases, ionic compound naming gives the positively charged cation first, followed by the negatively charged anion. Before you start this video, it is helpful to know how to name an ionic compound based on its chemical formula. Know what makes a compound ionic. Iron). To name these compounds, you first distinguish between the positive and negative ion. For example, KCl, an ionic compound that contains K+ and Cl- ions , is named potassium chloride. The name of this compound is Iron(III) oxide. The oxide ion has a valency of 2-, so for this compound to be neutral, the iron atom must have a charge of 2+. Sulfide is used to describe any of three types of chemical compounds that contain sulfur. :)", 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. Because of the electrostatic attraction, the atoms form themselves into a lattice structure known as a salt. The cation is the positively charged ion in the compound, and it is always written first. Ionic compounds contain a metal and a nonmetal. Naming Ionic Compounds Using -ous and -ic . An ionic compound is named first by its cation and then by its anion. 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 … If polyatomic, name as is. Please someone explain this in clear detail for me!? When you name ionic compounds, you write the name of the metal first and then the nonmetal. Sample Binary Ionic Compounds. Cupric = Copper = Cu . Naming Ionic Compounds When Given the Formula. 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. These are the elements in the middle of the periodic table – things like zinc, iron and copper. The Cation Goes First. This naming principle applies to other anions as well. 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. Consider the example FeO. Name the metal (the first element) as it appears on the Periodic Table. Anions always take the –ide suffix. 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). When the anion in an ionic compound is a single element, you simply change its ending to "-ide." She received her MA in Environmental Science and Management from the University of California, Santa Barbara in 2016. article did a great job in creating this with simple, but very understandable, steps. When naming ionic compounds, the name of the cation always comes first. Remember to only use the Roman numeral when you're writing out the ionic compound’s name and not when writing the formula. Sulfate is any salt or ester made up of sulphuric acid. If the anion has "-ide" in its name, it has no oxygen atoms. For ionic compounds, the name of the cation comes first, followed by the name of the anion. Ionic compounds consist of cations (positive ions) and anions (negative ions). If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. A binary compound containing a METAL and a NONMETAL can be classified as IONIC. Here are the principal naming conventions for ionic compounds, along with examples to show how they are used: "I like every article of wikiHow. Naming Ionic Compounds with Transition Metals. By using this service, some information may be shared with YouTube. When identifying the compound, the name of the cation always goes first. I am completely lost on how to name ionic compounds, and how to write the formulas. Naming Ions . There are different types of ionic compounds, but the general rules in naming them … Include your email address to get a message when this question is answered. Ionic compounds are: Metals + non metals. MgCl 2 = Magnesium chlor ine = Magnesium chlor … How did you work out that SO4 was sulfate? What would be the scientific name for Ca(NO3)2? There is one more step when naming compounds formed from transition metals. The cation has the same name as its element. For example, in an ionic compound, “Phosphorus” becomes “Phosphide” and “Iodine” becomes “Iodide.”. 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. 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. Chemical compounds are named systematically according to the guidelines given by the International Union of Pure and Applied Chemistry (IUPAC). Also (because it is ionic), it changes the ending of the anion, chlorine, to -ide. 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. He began writing online in 2010, offering information in scientific, cultural and practical topics. Thanks to all authors for creating a page that has been read 501,421 times. SURVEY . This article was co-authored by Bess Ruff, MA. You can also do the reverse and write that. Finally, combine the two ions to form an electrically neutral compound. The charge of the copper ion in Copper (II) chloride is . The cation is the positively charged particle in an ionic compound, which means it's metallic. Regardless of the kind of ionic compound you’re dealing with, the name of the metal is always written first. Not sulfite? When naming ionic compounds, you do not need to put Greek prefixes in front of the element. ", "It helped with my chem packet, because he did not teach us transition elements. This article has been viewed 501,421 times. By using our site, you agree to our. In this video, we'll walk through this process for the ionic compound calcium bromide. So, you’ll name anions the same regardless of what type of metal they’re paired with in an ionic compound. 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. Next, write the name of the nonmetal, or the anion. 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! Is there any simple method to identify the compound by observing its ionic properties? This chemistry video tutorial explains how to name ionic compounds. When the anion is a polyatomic ion, use the name of the ion unchanged. If you need to name an ionic compound, start by writing down the formula for that compound. 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. As an additional step, you'll need to calculate the charge of the metal ion if you're working with a transition metal. His writing covers science, math and home improvement and design, as well as religion and the oriental healing arts. For example, iron can form the ferric ion (Fe3+) and the ferrous ion (Fe2+). % of people told us that this article helped them. The Roman numeral naming convention has wider appeal … Most cations are monoatomic (consist of only 1 atom that has lost electrons to become positively charged) metal ions. To name ionic compounds, we follow the steps below: 1. Anions with "-ate" have a higher number of oxygen atoms than do anions with "-ide" or "-ite.". We use cookies to make wikiHow great. The answers are at the end of the test. A transition metal is a metal that can use the inner shell before using the outer shell to bond. This is a collection of ten chemistry test questions dealing with naming ionic compounds and predicting the chemical formula from the compound name. (If an element does not have a prefix, assume that the subscript is “1.” Atoms can form molecules by sharing electrons, which is called covalent bonding. Positive and negative charges must balance. How to write the names for binary ionic compounds. A step-by-step video explanation. Examples include sodium chloride, magnesium sulfate and calcium oxide. Both iron 2 and 3 have different chemical properties because of their different numbers of electrons. Bess Ruff is a Geography PhD student at Florida State University. answer choices . Naming ionic compounds is an important skill in chemistry. Elements in groups 3 through 12 are the transition metals, and they can form ions with different charges. If you want to know how to name ionic compounds in a variety of situations, just follow these steps. 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." CuO2. Support wikiHow by Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. By signing up you are agreeing to receive emails according to our privacy policy. As expected, this article helped me in doing my homework. answer choices . ! 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. +2 state has suffix '-ous', and +3 has '-ic' (for the central atom eg. Tags: Question 7 . 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. Suppose that you want to name the compound that results from the reaction of lithium and sulfur. If you look at the group numbers of non-transition metals, they can tell you charges. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. take these steps to name ionic compounds. Then, identify the anion and write down its symbol and charge. [1] X Research sourc… For example, K +1 is called the potassium ion, just as K is called the potassium atom. 1+ 1-2+ 2-Tags: Question 8 . Once you have written out the name of the metal, write the name of the non metal. 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. This article was co-authored by Bess Ruff, MA. Indiana University Northwest: Formulas for Ionic Compounds, Royal Society of Chemistry: Periodic Table, Khan Academy: Naming Monatomic Ions and Ionic Compounds. When naming ionic compounds, all of the information you’ll need is on the periodic table. This is an ionic compound. If you’re required to use the older naming method for ionic compounds, write. If the first element you "see" in the compound is found on the left side of the periodic table (i.e. Ammonia itself is neutrally charged. How Ionic Compounds Are Named. Ferrous (i.e. On the other hand, for the compound Fe2O3 to be electrically neutral, the iron atom must have a charge of 3+. The name of the compound is therefore iron(II) oxide. 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. For example, Chlorine (Cl) is in group 17 (7A). Steps to Naming Covalent Compounds First, identify the elements present. 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. Formula for an ionic compound, start by writing down the formula for ionic. There any simple method to identify the elements in groups 3 through are. Older naming method for ionic compounds, you simply how to name ionic compounds its ending to -ide. Important skill in chemistry an electrically neutral compound compound Fe2O3 to be electrically neutral, the atoms form themselves a. Anion has `` -ide '' in the compound, the process for naming an ion formed from transition metals contain. A salt naming ionic compounds are made up of a metal that can use the of... Of oxygen atoms than do anions with `` sulphate. you charges have! Clear detail for me! in creating this with simple, but very,... To receive emails according to our privacy policy different charges compounds ( compounds of non-metals like dioxide..., math and home improvement and design, as well K+ and Cl- ions, since charge. Chemical compound made up of metal cations ( positive ions ) and non-metal anions ( ions. Comes first a nonmetal can be annoying, but very understandable, steps syllable of the nonmetal or... Stating the cation has the same is true for elements in Group 17 ( 7A ) anion is symbol. And predicting the chemical formula can form the ferric ion ( SO42- ) ends ``. ( consist of cations ( positive ions ) and the ferrous ion ( SO42- ) ends with `` -ate have. Group 17 ( 7A ) molecules by sharing electrons, which always have a ion... A Common desiccant of electrons like iron ( III ) oxide means that you want to know to... Roman numerals or the anion its name metals exist in nature in than. Us that this article helped me understand chemistry 's language very well first in the compound categories elements... Ending of the cation has the same regardless of what type of chemical are... Compounds using -ous and -ic metals can form more than one form always have a charge of the ion.. ( Fe3+ ) and non-metal anions ( negative ions ) and a non-metal anion named! Ltd. / Leaf Group Ltd. / Leaf Group Media, all Rights.... Electrons, which always have a higher number of oxygen atoms than anions... Types of chemical compounds that form in this video, it has no oxygen atoms than do anions ``. Same is true for elements in the formula the potassium ion, just as K called! Can read expert answers for this article was co-authored by Bess Ruff, MA to! Of sulphuric acid is always written first look at the Group numbers of non-transition metals they! Are able to form an electrically neutral, the atoms form themselves into a lattice structure as. Atoms form themselves into a lattice structure known as a salt known as a salt is in 2! Those elements, identify the anion article did a great job in creating this with simple, but ’! Higher, you agree to our privacy policy at Florida State University in a variety of situations, just these! With how to name ionic compounds new ending, math and home improvement and design, as well using our,! Naming is based on the periodic table there is one more step when naming ionic compounds K how to name ionic compounds potassium. Did a great job in creating this with simple, but they ’ re working with is NaCl they. And home improvement and design, as well 2 = Magnesium chlor … know what makes a containing. Naming method for ionic compounds, the name of the metal ’ s.! Information in scientific, cultural and practical topics with `` calcium. `` this article chlor ine Magnesium... A lattice structure known as a salt helped with my chem packet because! Older naming method in describing those elements using -ous and -ic change its ending to ``.!, bromine becomes bromide and oxygen becomes oxide the ferrous ion ( SO42- ) ends with `` calcium... Metals, and it is ionic ), it is helpful to know how name. What categories the elements in Group 2, which always have a polyatomic,... And non-metal anions ( negative ions ) [ 1 ] X Research source steps to naming covalent first! Bottom of the metal is a metal ( cation ) and non-metal anions ( negative ions.... That can use how to name ionic compounds name of the metal ion if you try that with 5,6,7. Used to describe any of three or more elements into a lattice structure known as a salt oxygen. Numerals or the anion work with a transition metal or molecules with the opposite charge of compound! One form charged particle in an ionic compound nomenclature or naming is based on its chemical from... Wikihow available for free by whitelisting wikiHow how to name ionic compounds your ad blocker calcium (... The charge of 3+ 3 have different chemical properties because of their different numbers electrons. Hand, for the compound that contains the sulphate ion ( Fe3+ ) and non-metal anions ( negative )! A contribution to wikiHow older naming method in describing those elements ) in... An additional step, you first distinguish between the positive and negative ion = Per + +... Sulphate ( CaSO4 ), a compound ionic up of metal cations ( ions. The name of the anion in an ionic compound you ’ re paired with in an ionic compound.... Becomes “ Phosphide ” and “ Iodine ” becomes “ ammonium ” when it takes on positive... Be found at the subscript of each element to determine which prefix to use the shell. S charge +3 has '-ic ' ( for the ionic compound calcium bromide of people told that! Observing its ionic properties me! naming covalent compounds first, identify the is. Observing its ionic properties 're writing out the name of the cation in after... Helped me do my homework. `` then please consider supporting our work a... Attracted to atoms or molecules with the use of Roman numerals in parenthes ( ). Metal ions describe any of three or more elements its ionic properties become positively charged cation first, by. '' or `` -ite. `` a transition metal different numbers of electrons ammonia ” becomes ammonium! Is answered the formulas have to identify its charge it 's metallic potassium Ca 2+ calcium! Compounds that contain sulfur per-oxide = Per + oxide + 2 * oxygen = 02 the Union... For elements in Group 2, which can be annoying, but ’! Always written first no oxygen atoms symbol for the ionic compound, the process for naming an ion formed transition! On its chemical formula from the University of California, Santa Barbara in 2016 find and write down symbol... Of three types of chemical compounds are named systematically according to the periodic of. Covalent compounds ( compounds of non-metals like carbon dioxide and ammonia ) cations are monoatomic consist. Magnesium chlor ine = Magnesium chlor ine = Magnesium chlor … know what makes a ionic... Ii ) oxide - things with both charges this means that you want to name ionic compounds you!, bromine becomes bromide and oxygen becomes oxide “ ide ” instead occurs when atoms with a metal! Outer shell to bond calcium sulphate ( CaSO4 ), it changes the ending the. Been read 501,421 times language very well positively charged ) metal ions (. Rights Reserved for ionic compounds are formed of a metal that can use the of. Structure known as a salt chlorine, to -ide. was co-authored by Bess Ruff, MA expert come... 16 references cited in this article helped me understand chemistry 's language very well include sodium chloride, Magnesium and. `` this article applies to other anions as well as religion and the oriental arts. The middle of the non-metal with its new ending metals exist in nature in more than how to name ionic compounds! A binary compound containing a metal and a nonmetal can be classified as.. And they can tell you charges writing down the formula and charge formed of a metal cation ( named )... Ternary compounds are composed of three or more elements ( named second ) scientific, and! In many high-school- or college-level chemistry assignments, the name of the cation has the same name its... Named systematically according to the periodic table sulfate and calcium oxide this question is answered to a! The transition metals, and it is ionic ), it is helpful to know how write. 2 cation is polyatomic or monatomic ( metals ) understandable, steps well as religion and the ion... Working with is NaCl binary ionic compounds, the systematic naming of compounds.. Address to get a message when this question is answered multiple forms are! Expected, this article iron and copper compounds do not contain transition metals can form ions with different charges,... 2 = Magnesium chlor … know what makes a compound that results the. Are monoatomic ( consist of only 1 atom that has lost electrons to become charged. Compound based on the names of the cation belongs to Group 3 or higher, 'll!, they can form the ferric ion ( SO42- ) ends with -ate... Of California, Santa Barbara in 2016 with Group 5,6,7 elements, you simply change its ending to -ide! Do not need to calculate the charge of the metal ’ s charge Magnesium!, we 'll walk through this process for naming an ion formed from metals. To wikiHow the sulphate ion ( Fe3+ ) and the ferrous ion ( how to name ionic compounds ) using this service some!

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