Now, binary molecular compounds are molecular compounds that contain 2 different elements together. These elements being nonmetals. For example, we have water, and we have nitrogen with oxygen. Here we have hydrogen with oxygen. That's 2 different elements together. Here we have nitrogen with oxygen. Again, 2 different nonmetals together. Now we're going to say that these molecular compounds utilize numerical prefixes, and that's because these numerical prefixes are always required because these compounds can combine in different proportions. Now with numerical prefixes, we have mono, which is 1, di, which is 2, tri, which is 3, tetra, which is 4, penta, which is 5, hexa is 6, hepta is 7, octa is 8, nona, a little weird sounding, is 9, and then, of course, deca is 10. So just remember when we talk about binary molecular compounds, that's molecular compounds, covalent compounds that contain 2 different, nonmetals together.
Naming Binary Molecular Compounds - Online Tutor, Practice Problems & Exam Prep
Molecular Compounds, also known as covalent compounds, contain only non-metals bonded together.
Naming Binary Molecular Compounds
Naming Binary Molecular Compounds Concept 1
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Naming Binary Molecular Compounds Concept 2
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So when it comes to naming binary molecular compounds, these are the rules you need to keep in mind. So step 1, we're going to say the first nonmetal is named normally and uses all numerical prefixes except for mono. So it doesn't ever use mono. The second nonmetal keeps its base name, uses any numerical prefix, and has its ending changed to "ide". And when naming, if the letter "a" of the numerical prefix is next to a letter "o", we can just drop the letter "a". For example, we say tetraoxide, meaning we have 4 oxygens within our molecular compound. We're going to say here "a" and "o" are next to each other and we're going to do what it says. We are going to drop the letter "a". So tetraoxide would become tetroxide. So keep these steps or rules in mind when naming any type of binary molecular compound.
Molecular Compounds require numerical prefixes because compounds can combine in many different proportions.
Naming Binary Molecular Compounds Example 1
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In this example question, it says write the formula for each of the following compounds. So for the first one we have is disulfur monochloride. So di means 2 sulfurs. So that's S2 and then mono means we have one of it, which is chloride. Chlorine is the base name for chloride, and this would be S2Cl. For the next one, we have tetraphosphorus pentaselenide. Alright, so tetra means 4; therefore, 4 phosphoruses, so P4. Penta means 5, and selen is the base name of selenium, which is Se. Thus, there being 5 of it, the formula would be P4Se5. Then, finally, we have dibromoheptoxide. So di means 2, which refers to 2 bromines, so Br2. We have heptoxide. So hept comes from hepta, which means 7, and ox represents oxygen, meaning there are 7 oxygens. So dibromoheptoxide is Br2O7. So just remember, the first nonmetal keeps its name as normal, uses all numerical prefixes except for mono. The second nonmetal uses any numerical prefixes, but has its ending changed to ide.
Give the systematic name for the following compound:SeF6
Give the systematic name for the following compound:IO5
Give the systematic name for the following compound:N2S4