HARDMCQ SINGLEJEE Advanced ChemistryInorganic Chemistryp-Block (group 13 and 14)Achiever Section

Assertion : Boron always forms covalent bond. Reason : The small size of B³⁺ favours formation of co- valent bond.

A.A✓ Correct

B.B

C.C

D.D

Explanation

The electronic configuration of Boron is 2 2 1 1 2 2 s s p . Boron atom is small in size. So, the electrons are com- pletely attracted to the nuclear charge. Therefore, a large amount of energy is needed to remove 3 electrons from the boron atom. So Boron does not form 3 B + ion. It mainly forms covalent bond.

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