Given below are two statements Statement I : The N - N single bon…

MCQ

Given below are two statements
Statement I : The $N - N$ single bond is weaker and longer than that of $P - P$ single bond
Statement II : Compounds of group 15 elements in +3 oxidation states readily undergo disproportionation reactions.
In the light of above statements, choose the correct answer from the options given below

A
Statement I is true but statement II is false
✓
Both statement I and statement II are false
C
Statement I is false but statement II is true
D
Both statement I and statement II are true

✓

Answer

Correct option: B.

Both statement I and statement II are false

(B) Both statement I and statement II are false
$\ddot{ N }-\ddot{ N }$ single bond weaker than $\ddot{ P }-\ddot{ P }$ due to more $\ell p -\ell p$ repulsion.
Bond length $\Rightarrow d_{p-p}>d_{ N - N }($ size $\uparrow$, B.L. $\uparrow)$
In group 15 elements only N & P show disproportionation in +3 oxidation state, As, $S b$ & Bi have almost inert for disproportionation in +3 oxidation state.
So both statements are false.

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