If X = Total number of valence electron...

If X = Total number of valence electrons in free atom, Y = Total number of nonbonding or lone pairs of electrons and Z = Total number of bonding or shared electrons, then the CORRECT formula to calculate formal charge on an atom is:

A

F.C. = X + Y - (Z/2)

B

F.C. = X - Y -(Z/2)

C

F.C. = X - Y + (Z/2)

D

F.C. = X - (Y/2) - (Z /2)

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