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Octet Rule

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Which of the following substances contains an atom that does not follow the octet rule? See attached for multiple choice answers.

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The octet rule for substances is found. The answer is given in an attachment with short explanations equaling 140-150 words.

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See attachment.

Which of the following substances contains an atom that does not follow the octet rule?
a) AlCl3
b) PCl3
c) PCl5
d) SiCl4

A).AlCl3 does NOT follow the octet rule ...

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