Which one of the following is the correct statement?

Which one of the following is the correct statement?

(a ) B2H6 ∙ 2NH3 is known as ‘inorganic benzene’.

(b) Boric acid is a protonic acid.

(c ) Beryllium exhibits coordination number of six.

(d) Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase.

Answer: 

#inorganic Benzene is B3N3H6

#Boric acid is not a protonic acid,it is lewis acid

#Beryllium exhibits coordination number of four.

D option is correct