The element that shows greater ability to form $p \pi-p \pi$ multiple bonds, is:

JEE Main · 2019 · 12 Jan 2019 · Shift 2 · p-Block Elements

The element that shows greater ability to form

p π - p π

multiple bonds, is:

(A)Sn
(B)C✓ Correct
(C)Ge
(D)Si

Answer: (B)

Solution

Forming

p π - p π

multiple bonds needs small atoms whose

p

-orbitals overlap sideways well. Carbon, the smallest of group 14, makes strong

C = C

and

C \equiv C

bonds, whereas the larger silicon, germanium and tin lose this ability and prefer single bonds. Carbon therefore shows the greatest tendency.

JEE Main · 2019 · 12 Jan 2019 · Shift 2 · Single correct option

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