Question

(4) Hypervalent species among the following is [NCERT Pg. 105] (1) BF3 (3) SIF (2) CO2 (4) XeF 4​

Answer 1

BF3 is the hypervalent species. When atoms have more than eight electrons in their valence shell, they are said to be hypervalent.

Explanation:

The species in which there are more atoms attached to a central atom can be accommodated by an octet of electrons.

Any compound which contains more than eight formally assignable electrons in a valence shell is directly associated with the central atom's indirect bonding with a number of ligands.

Hypervalent implies that a transfer of the electrons from the central, atom to the nonbonding molecular orbitals which it forms with more ligands.

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