1/24/2024 0 Comments Anki mcat polyatomic ions![]() ![]() ![]() ClO three minus was Chlorate, here we have Bromine instead of Chlorine, so this would be Bromate. ![]() We could have done thisįor a different halogen, here we're dealing with Chlorine, but let's say, instead of ClO three minus, let's do BrO three minus. We had two Oxygens, we take one away and now Hypo means one fewer, so if we look at Chlorite, So we talked about Chlorite up here, so here's Chlorite and then we put a prefix, hypo, in front of it. Chlorate had three OxygensĪnd for Perchlorate we add one on and we get four. What about Perchlorate? So here we have Chlorate, but we've added on a prefix this time and the prefix, per, So we have ate meaning moreĪnd ite meaning fewer here. And that ending is importantīecause it's gonna help you with some of the other polyatomic ions. Nitrate has three Oxygens and Nitrite has two Oxygens. So we have ate suffix, ate suffix here, which means more Oxygens. And, when you get to NO three minus versus NO two minus, look at the endings. And for Anions, there are manyĪnions that you should know. So we'll start off with Cation here, so a positively charged ion, NH four plus is called the Ammonium ion. So let's go through a list of some of the ones that I am a bit confused.Ī general chemistry class, you often have to memorize some of the common polyatomic ions. Also, what exactly are these? Like I read that ionic compound's charges must cancel, but here we have anions and cations? There can be ions with charges that form substances but aren't considered compounds? So if atoms get attached to each other, gain or lose electrons, they are in an ionic bond, but they don't form a compound, but can form a substance? Then for example what is ammonium? Is it a compound or an ion? If it is an ion, then shouldn't it also be a compound?. why are there 7 oxygen atoms? I thought that only the number of chromium's were supposed to double. But then dichromate has 2 chromium atoms, and 7 oxygen atoms. So if we add Hydrogen to any charged ionic compound, we keep the name of the original compound (for example sulfate), and then add "bi" (like bisulfate)? And what is the difference between the prefixes "bi" and "di"? Like could we call dihydrogen phosphate, bihydrogen phosphate? Can we call dichromate as bichromate? Both "di" and "bi" mean 2 right? And if we can't, why not? Also Chromate has 1 chromium atom, and 4 oxygen atoms. Hello! I have a few questions: Can hydrogen phosphate also be called biphosphate? Like when we added Hydrogen to Sulfate, we got hydrogen sulfate, which is also known as bisulfate. ![]()
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