Q19 / 90 · JEE Main 2024 (27 Jan Shift 2) · Chemistry

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:

  • A
    Statement I is correct but Statement II is incorrect 
  • B
    Both Statement I and Statement II are correct
  • Correct answer
    C
    Both Statement I and Statement II are incorrect
  • D
    Statement I is incorrect but Statement II is correct

Solution

Statement-I: Oxygen can have oxidation state from -2 to +2, so statement I is incorrect

Statement- II: On moving down the group stability of +4 oxidation state increases whereas stability of +6 oxidation state decreases down the group, according to inert pair effect.

The inert-pair effect is the tendency of the two electrons in the outermost atomic s-orbital to remain unshared in compounds of post-transition metals.

So both statements are wrong.

Hence, the correct answer is option: 'C'.

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