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JEE Main · 2025 · 03 Apr 2025 · Shift 1 · p-Block Elements

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Given below are two statements

Statement I: The N-N single bond is weaker and longer than that of single bond
Statement II : Compounds of group 15 elements in oxidation states readily undergo disproportionation reactions.
In the light of above statements, choose the correct answer from the options given below
  1. (A)Statement I is true but statement II is false
  2. (B)Both statement I and statement II are false✓ Correct
  3. (C)Statement I is false but statement II is true
  4. (D)Both statement I and statement II are true

Answer: (B)

Solution

Nitrogen is small, so the single bond is weaker than through greater lone-pair repulsion, yet it is shorter, not longer; calling it longer makes Statement I false. Ready disproportionation of the state is not a general feature of group 15, since the heavier members arsenic, antimony and bismuth are stabilised in by the inert-pair effect and resist it, so Statement II is false as well. Both statements are false.

JEE Main · 2025 · 03 Apr 2025 · Shift 1 · Single correct option

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