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Question

Assertion (A): Stability of NH3 is greater than PH3
Reason (R): M - H bond energy increases down the group in the hydrides of pnicogens.

A
Both (A) and (R) are true and (R) is the correct explanation of (A)
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B
Both (A) and (R) are true and (R) is not the correct explanation of (A)
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C
(A) is true and (R) is false
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D
(A) is false but (R) is true
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Solution

The correct option is C (A) is true and (R) is false
Reason is false.
M - H bond energy decreases down the group due to decrease in electronegativity.

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