Which is least stable - Vidyadip

MCQ

Which is least stable

✓
$Bi{H_3}$
B
$Sb{H_3}$
C
$As{H_3}$
D
$P{H_3}$

✓

Answer

Correct option: A.

$Bi{H_3}$

a
(a) $P{H_3} > As{H_3} > Sb{H_3} > Bi{H_3}$

On moving down the group bond energy decreases. Hence, stability decreases.

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