Octet rule states that main-group elements will generally form enough bonds to obtain 8 electrons in their valence shell
Nonmetals starting from period 3 to 7 can have more than 8 valence electrons around them when in the center which makes them having an expanded octet
For POCl3, valence electron of P is 5, O is 6 while Cl is 7. Total valence electrons are 32. (5 + 6 + 7(3) = 32)
Write Lewis structure that obey the octet rule for the following molecules and ions. (In this case the first atom listed is the central atom.)
a. POCl3, SO42-, XeO4, PO43-, ClO4-
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Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.