Question

The $Cl-C-Cl$ bond angle in 1,1,2,2- tetrachloroethene and tetrachloromethane respectively will be:

• A. less than ${109.5}^o$ and less than ${90}^o$
• B. less than ${120}^o$ and equal to ${109.5}^o$
• C. equal to ${90}^o$ and less than ${109.5}^o$
• D. equal to ${109.5}^o$ and equal to ${120}^o$

Answer 1

The correct option is B less than ${120}^o$ and equal to ${109.5}^o$

In 1,1,2,2- tetrachloroethene, both the carbon atoms have $s{p}^2$ hybridisation. The shape is trigonal planar since double repulsion is more the bond angle is less than ${120}^o$.
In tetrachloromethane, the carbon atom is $s{p}^3$ hybridised and will have a bond angle of ${109.5}^o$.