The formal charges of HCN molecule has to be determined. Concept Introduction A formal charge (FC) is the charge assigned to an atom in a molecule, irrespective of relative electronegativity by thinking that electrons in all chemical bonds are shared equally among atoms. This method is used to identify the most probable Lewis structures if more than one possibility exists for a compound. The Lewis structure with formal charge on each of the atoms close to zero is taken as the most plausible structure. Formal charge of an atom can be determined by the given formula. Formal charge ( F C ) = ( no .of valence electron in atom ) − 1 2 ( no .of bonding electrons ) − ( no .of non-bonding electrons )

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Chapter 6.4, Problem 6.4.1SR

Interpretation Introduction

Interpretation:

The formal charges of HCN molecule has to be determined.

Concept Introduction

A formal charge (FC) is the charge assigned to an atom in a molecule, irrespective of relative electronegativity by thinking that electrons in all chemical bonds are shared equally among atoms.

This method is used to identify the most probable Lewis structures if more than one possibility exists for a compound.

The Lewis structure with formal charge on each of the atoms close to zero is taken as the most plausible structure.

Formal charge of an atom can be determined by the given formula.

Formal charge (F C) = (no.of valence electron in atom)−12(no.of bonding electrons)−(no.of non-bonding electrons)

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