JEE Main · 2024 · 27 Jan 2024 · Shift 2 · p-Block Elements

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Given below are two statements:

Statement (I) : Oxygen being the first member of group 16 exhibits only -2 oxidation state.
Statement (II) : Down the group 16 stability of +4 oxidation state decreases and +6 oxidation state increases.

In the light of the above statements, choose the most appropriate answer from the options given below:
  1. (A)Statement I is correct but Statement II is incorrect
  2. (B)Both Statement I and Statement II are correct
  3. (C)Both Statement I and Statement II are incorrect✓ Correct
  4. (D)Statement I is incorrect but Statement II is correct

Answer: (C)

Solution

Oxygen, the first member of group 16, actually shows oxidation states other than — for instance in , in , and in — so the claim that it exhibits only is false, making Statement I incorrect.

Going down group 16, the inert-pair effect makes the lower oxidation state (+4) progressively more stable and the higher oxidation state (+6) progressively less stable — the opposite of what Statement II claims, so Statement II is also incorrect.

Both statements are false.

JEE Main · 2024 · 27 Jan 2024 · Shift 2 · Single correct option

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