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In this problem, we're looking at carbonate polyatomic ion, and we're going to be building a loath structure and then answering questions about it.
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So we're going to start by looking at how many valence electrons we have.
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Carbon has four, each oxygen has six, and our minus two charge means we add two.
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So this gives us 24 electrons.
00:24
So that's going to be your balance electrons.
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Then to determine how many valence electrons will be on your central.
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Atom.
00:33
We're going to say we have three outer atoms and each wants an octet.
00:37
So that gives us 24 electrons.
00:40
You'll notice be the zero electron difference.
00:43
So that tells us there are no lone pairs around our central atom.
00:49
So we can start by looking at this...