Naming Binary Molecular Compounds

now binary molecular compounds are molecular compounds that contain two different elements together. These elements being non metals. So example, we have water and we have uh nitrogen with oxygen. So here we have hydrogen with oxygen, that's two different elements together. Here we have nitrogen with oxygen. Again, two different non metals 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 one die, which is to try, which is three tetra, which is four Penta, which is five Heh CSA is six, Hector is seven. Octa is eight known, a little weird sounding is nine and then of course deca is 10. So just remember when we talk about binary molecular compounds that's calm molecular compounds, Covalin compounds that contain two different non metals together.

So when it comes to naming binary molecular compounds, these are the rules you need to keep in mind. So step one, we're going to say the first non metal is named normally and uses all numerical prefixes except for mono. So it doesn't ever use Montana. The second nonmetal keeps its base name, uses any numerical prefix and has its ending change to ID. So I. D. And we're gonna say when naming it, the letter A. Of the numerical prefix is next to a letter oh we can just drop the letter A. So for example, we say tetra oxide meaning we have four oxygen's within our molecular compound. We're going to stay here and or next to each other and we're gonna do what it says, we're going to drop the letter A. So tetra oxide would become to track side. So keep these steps or rules in mind when naming any type of binary molecular compound.

in this example question It says white the formula for each of the following compounds. So for the first one we have is die sulfur, mono chloride. So dai means to to solvers. So that's as to and then mono chloride Chlor is the base name of chlorine and model means we have one of it. So this would be asked to see l for the next one. We have Tetra phosphorus Penta sullen eyed. Alright, So tetra means 44 phosphorus is so p four Penta means five and selling is the base name of selenium which is S e and they're being five of it would be p four s e five then finally we have die, bro Mo helped oxide So dai means to To bro means so be are too. And we have helped oxides So helped comes from Heptulla which means seven and then ox means oxygen. So there are seven oxygen's so di Bruno have dockside is br 207 So just remember the first time metal keeps its name is normal uses all numerical prefixes except for mono. The second nonmetal uses any numerical prefixes. But has its ending changed toe I'd