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Which of the following statements is ...

Which of the following statements is wrong -

A

nitrogen cannot form ` d pi - d pi` bond

B

single `N - N` bond is weaker than single P - P bond

C

`N_(2)O_(4)` has two resonance structures

D

the stability of hydrides increases form `NH_(3)` to `BiH_(3)` in group - 15 of the periodic table

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The correct Answer is:
D
In group - 15 donw the group , the stability of hydrides decrease.
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