A) Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase.
B) \[{{B}_{2}}{{H}_{6}}.2N{{H}_{3}}\] is known as ?inorganic benzene?.
C) Boric acid is a protonic acid.
D) Beryllium exhibits coordination number of six.
Correct Answer: A
Solution :
Inorganic benzene is\[{{B}_{3}}{{N}_{3}}{{H}_{6}}\], Boric acid is a Lewis acid and beryllium exhibits co?ordination number of 4 only. \[BeC{{l}_{2}}\] and \[AlC{{l}_{3}}\]both exhibit bridged structures in the solid state.
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