A) \[{{B}_{2}}{{H}_{6}}.2N{{H}_{3}}\] 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.
Correct Answer: D
Solution :
[d] The correct formula of inorganic benzene is \[{{B}_{3}}{{N}_{3}}{{H}_{6}}\] so [a] is incorrect statement Boric acid \[({{H}_{3}}B{{O}_{3}}\]or\[\underset{OH}{\mathop{\underset{|}{\mathop{\overset{OH}{\mathop{\overset{|}{\mathop{B}}\,}}\,}}\,}}\,-OH\] is a lewis acid so [b] is incorrect statement. The coordination number exhibited by beryllium is 4 and not 6 so statement [c] is incorrect. Both \[BeC{{l}_{2}}\] and \[AlC{{l}_{3}}\] exhibit bridged structures in solid state so [d] is correct statement.
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