Answer :
Lewis-dot structure : It represent the number of valance electrons present in the element. It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.
The given molecule is, [tex]CNCl[/tex]
As we know that, carbon has '4' valence electrons, nitrogen has '5' valence electron and chlorine has '7' valence electrons.
Therefore, the total number of valence electrons in [tex]CNCl[/tex] = 4 + 5 + 7 = 16
According to Lewis-dot structure, there are 8 number of bonding electrons and 8 number of non-bonding electrons.
In the given molecule, carbon is the central atom because it is more electropositive element than the nitrogen and chlorine. The carbon bonded with nitrogen by the triple bond because nitrogen ability to form triple bond and carbon bonded with chlorine by single bond.
The Lewis-dot structure of [tex]CNCl[/tex] is shown below.
