Question

What do you mean by formal charge ?
Explain its significance with the help of
suitable example.​

Answer 1

Formal charge means ignore the lone pair of electrons and electrons shared by that atom from valence electron then whatever is left with you is signature of formal charge. That is, valence electron minus total lone pairs of electrons minus electrons shared by that atom only. If we take example of O3 (ozone) molecule.

Answer 2

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Formal charge means ignore the lone pair of electrons and electrons shared by that atom from valence electron then whatever is left with you is signature of formal charge. That is, valence electron minus total lone pairs of electrons minus electrons shared by that atom only. example - O3 (ozone) molecule.