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October 25, 2014

Homework Help: Chemistry

Posted by Anonymous on Wednesday, February 10, 2010 at 10:11pm.

How do you find the number of valence electrons in a molecule? Do I need to use the Lewis structure diagram to find out? Please help! I need to the total number of valence electrons for SiH4, H2SO4, CCl4, BF3 and I don't know how!

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