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What is the formal charge on carbon of the molecular ion CO32-
(Carbonate ion )? With explaination & PLZ tell me WHAT IS THE MEANING OF FORMAL CHARGE :? PLZ EXPLAIN !!!!!!!
plz reply !!!!
Dear Priya
a formal charge (FC) is the charge assigned to an atom in a molecule, assuming that electrons in a chemical bond are shared equally between atoms, regardless of relative electronegativity.
The formal charge of any atom in a molecule can be calculated by the following equation:
Where V is the number of valence electrons of the atom in isolation (atom in ground state); N is the number of non-bonding valence electrons on this atom in the molecule; and B is the total number of electrons shared in covalent bonds with other atoms in the molecule.
When determining the correct Lewis structure (or predominant resonance structure) for a molecule, the structure is chosen such that the formal charge (without sign) on each of the atoms is minimized.
Examples:
for co3-2
V=4, N=0, B=8 (4 from C and 4 from 3 0)
Formal charge on carbon =4-0-8/2= 0
All the best.
AKASH GOYAL
AskiitiansExpert-IIT Delhi
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