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Lead and Iodine, Lead Iodide question?

by noahsdev
Tags: iodide, iodine, lead
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noahsdev
#1
Sep7-13, 10:14 PM
P: 22
**EDIT** Never mind just realised that it is lead(II) in PbI2. Hehe... Awkward
Why does lead iodide have the formula PbI2?
Pb needs to lose (or gain) 4 electrons to have a stable octet and Iodine needs to gain only 1. So why isn't the equation PbI4? It seems like it should be... Please explain if you can.
Thanks :)
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SteamKing
#2
Sep7-13, 10:41 PM
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Lead is one of those elements with multiple oxidation states (either +2 or +4). The most common state is +2, which is why lead iodide is PbI2
noahsdev
#3
Sep7-13, 10:44 PM
P: 22
Quote Quote by SteamKing View Post
Lead is one of those elements with multiple oxidation states (either +2 or +4). The most common state is +2, which is why lead iodide is PbI2
Haha I just realised. Thanks :D


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