Step-by-step explanation:
Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.
In the Lewis-dot structure the valance electrons are shown by 'dot'.
In structure of carbononitridic chloride , chlorine atom is single bonded to carbon where as carbon is bonded by triple bond with nitrogen atom. It is a linear molecule.
Carbononitridic chloride (CNCl) = Cl-C≡N
The Lewis dot structure of carbononitridic chloride is given in an image.