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sir what are the basic things to keep in mind for the chapters of chemistry and specially in theory part
and si can you tell me about formal charge and how to do it.
 

Asked by JASKAMAL KAUR 27th February 2015, 5:21 PM
Answered by Expert
Answer:

Hi,

 

Formal Charge = [# of valence electrons on atom] – [non-bonded electrons + number of bonds].

Let’s apply it to  :CH3 (one to the right from BH4)

The number of valence electrons for carbon is 4

The number of non-bonded electrons is two (it has a lone pair)

The number of bonds around carbon is 3.

So formal charge = 4 – (2 +3) = 4 – 5  = –1

The formal charge of C in  :CH3 is negative 1. 

Answered by Expert 2nd March 2015, 6:22 PM
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