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Per NCERT §4.1.4, the FORMAL CHARGE on an atom in a Lewis structure is given by which formula?
AF.C. = bonding e⁻ − lone-pair e⁻
BF.C. = atomic number − group number
CF.C. = (valence e⁻ of free atom) − (lone-pair e⁻) − ½(bonding e⁻)
DF.C. = protons − electrons
Answer & Solution
Correct answer: C. F.C. = (valence e⁻ of free atom) − (lone-pair e⁻) − ½(bonding e⁻)
Per NCERT §4.1.4, FC = N_v − N_lp − ½N_bp. Lowest-FC Lewis structure usually most stable.
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