Naming Ionic Compounds - Video Tutorials & Practice Problems
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An ionic compound is composed of a positive ion and a negative ion.
Naming Ionic Compounds
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Naming Ionic Compounds
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Naming ionic compounds is gonna be an incredibly important skill that you'll have to utilize for the remainder of your chemistry career. Now before we can name ionic compounds, it's first important to understand what are the components that make up an ionic compound. Now recall, an ionic compound, ionic compounds themselves contain a positive ion called a cation. And one way to remember that cations are positive is here, this t can be seen as a positive charge associated with them, and this positive ion is connected to a negative ion called an anion. This is important to recall because a lot of times we may mistakenly say that an ionic compound is simply a metal with a nonmetal. That is not true. An ionic compound fundamentally is a positive ion with a negative ion. The cation could be represented by a metal, but it could also be represented by a polyatomic ion that possesses a positive charge. And remember, the polyatomic ions, there's only 2 that possess a positive charge. One of them being mercury 1 ion, but that already fits under the whole idea of being a metal. The other polyatomic ion that is positive is the ammonium ion. Remember, the ammonium ion is NH4 positive. So our cations are a metal with a positive charge or the ammonium ion which has a positive charge, And the anion is represented by a nonmetal or also a polyatomic ion that possesses a negative charge. So remember, a lot of the other polyatomic ions that possess negative charges, you have your nitrate ion, your carbonate ion, your phosphate ion. When it comes to an ionic compound, to be able to spot them, you have to remember they are a positive ion connected to a negative ion. So as we go into naming them, just remember these fundamental components that make them up.
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Naming Ionic Compounds
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When it comes to name an ionic compound, there's a certain number of steps you have to follow in order to name the compound successfully. Now if we take a look here, step 0. Step 0 is the most important thing to remember. When it comes to ionic compounds, we're always gonna write them as cation first, followed by anion second. K. And that's the way we kinda wanna keep things consistent. Step 1, we're gonna start out with a cation since it's written first. With a cation, the metal always keeps its name and is written first. Now part of this deals with the charge. If the metal possesses multiple charges, we must use a roman numeral to describe its positive charge. So remember, if you don't recall this, go back to our videos on periodic table and charges. Remember, the main group elements for the most part possess one type of charge, so they wouldn't require a roman numeral. It's the transition metals for the most part that possess multiple charges. Because of that, we have to specify which one of them we're talking about. Am I talking about the manganese 2 ion or am I talking about the manganese 5 ion? So again, if you don't remember this, go back to my videos on periodic table and charges. So if it possesses multiple charges, we use a Roman numeral. If the metal possesses one charge, just one type of charge, then we don't have to worry about a Roman numeral. For example, aluminum. Aluminum is in group 3. Group 3 has a charge of plus 3. Aluminum is not gonna have any other type of positive charge, so I don't have to give it a roman numeral. Now for the anion, if a nonmetal is used, it keeps its base name, but has its ending changed to eyed. Now recall, the base name is just the beginning of the nonmetal's name that is unchanged. In the next video, we're gonna take a look at the different types of nonmetals and what exactly are their base names following this definition. So click on to the next video and let's take a look at some base names of nonmetal.
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Naming Ionic Compounds
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now remember, the base name is just the beginning of the non metals name that is unchanged. So if we take a look here, we have our non metals and we try to group them as best as we can in terms of the periodic table. So we have in group one a hydrogen three a boron. These are in four A. These are in five A. These are in six a and of course, our intelligence in seven A. Now remember, the base name again is the beginning of the non metals name that is unchanged. So for hydrogen, it's based name is hydrogen boron. It's bore. Carbon is carb. Silicon is Scylla. Nitrogen, phosphorus is Foss, for oxygen is just ox. Now, again, we can just add Suffolk's endings to them. But these are just the base names. Sulfur is self. Then we have selenium, which is Silin, till Erie, um is tiller. And then we've covered the halogen is when discussing the oxy allergens or halogen oxy and ions. So you know that this is floor chlor brome and I owed so these would be the base names for non metals when it comes to our Ionic compounds. Now Step three is just if we're dealing with a poly atomic ion anyway, if it's present, it always just keeps its name. So if our Ionic compound possesses a phosphate group, then it's just phosphate. Now Keith e. Steps in mind when we're presented with any type of Ionic compound and asked to determine its name.
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Naming Ionic Compounds Example 1
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In this example question, it says provide the name for the following compound, CA and CL. Alright. So CA is calcium and cl is chlorine. We know that the metal keeps its name and is written first, so we have calcium. But we have to think about, does calcium possess multiple charges? Calcium is in group 2 a on the periodic table. Remember, metals in group 2 a, they all have 1 charge plus 2. Because calcium possesses only one charge, it does not require a roman numeral. So its name would just be calcium. Then we have chlorine. Remember, for the nonmetal, we keep its base name which is chlor, but then we add ide to the end of the name. So c a c l 2 would be called calcium chloride.
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Problem
Problem
Provide the name for the following compound:Al(BrO4)3
A
aluminum hypobromite
B
aluminum bromite
C
aluminum bromide
D
aluminum bromate
E
aluminum perbromate
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Problem
Problem
Provide the name for the following compound:CoCO3
A
cobalt carbonate
B
cobalt (II) carbonate
C
cobalt carbonite
D
cobalt (III) carbonite
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