Liner olecule have sp hybridisation
N2O,CO2,HCN and +NO2 are sp hybridised. Hence, linear in shape.
Hence, x=4
O3=sp2 hybridised and angular in shape.
NO2=sp2 hybridised and angular in shape.
SO2=sp2 hybridised and angular in shape.
SnCl2=sp3 hybridised with one lone pair and hence, angular in shape.
Cl2O =sp3 hybridised with one lone pair and hence, angular in shape. are angular.
Hence y=5
Hence, x = 4 and y = 5 so xy=45=0.8