A) \[{{B}_{3}}{{N}_{3}}{{H}_{6}}\] He is known as inorganic benzene
B) Chlorides of both beryllium and aluminium have bridged chloride structure in gas phase
C) Boric acid is a protonic acid
D) Beryllium exhibits coordination number of six
Correct Answer: A
Solution :
\[\text{BeC}{{\text{l}}_{\text{2}}}\] and \[\text{A1C}{{\text{1}}_{\text{3}}}\]both have bridged structure in solid phase. \[{{\text{B}}_{\text{3}}}{{\text{N}}_{\text{3}}}{{\text{H}}_{6}}\]is known as inorganic benzene. Boric acid is Lewis acid. Beryllium exhibits coordination number of 4.
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