Question

Which one of the following is the correct statement?

Options

• Boric acid is a protonic acid

• Beryllium exhibits coordination number of six

• Chlorides of both beryllium and aluminium have bridged structures in solid phase

• B₂H₆. 2NH₃ is known as ‘inorganic benzene’

Answer 1

Chlorides of both beryllium and aluminium have bridged structures in solid phase

Explanation:

The correct formula of inorganic benzene is B₃N₃H₆, so (d) is incorrect statement.

Boric acid (H₃BO₃) is a Lewis acid, so (a) is incorrect statement.

The coordination number exhibited by beryllium is 4 and not 6, so statement (b) is also incorrect.

Both BeCl₂ and AlCl₃ exhibit bridged structures in solid state, so (c) is correct statement.