MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryp-Block (group 13 and 14)Boron and Its Compounds
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✓ Correct
Explanation
Among the given option, for option (a) 2 6 3 B H .2NH is not known as ‘inorganic benzene’. The actual formula of inorganic benzene is 3 3 6 B N H . For option (b) Boric acid is not a protonic acid, it does not donate a proton, it is a Lewis acid, in the water it accepts electrons from a water molecule and forms 4 B(OH)- ion. For option (c) Beryllium exhibits a coordination number of 4, as it has only 4 orbitals in its outermost shell. For option (d) due to the diagonal relationship, chlorides of both beryllium and aluminium have bridged chloride structures in the p-BLOCK (GROUP 13 AND 14) 10
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