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JEE Main202427 Jan 2024Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

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:

Options

  1. AStatement I is correct but Statement II is incorrect
  2. BBoth Statement I and Statement II are correct
  3. CBoth Statement I and Statement II are incorrect
  4. DStatement I is incorrect but Statement II is correct

Correct answer

C. Both Statement I and Statement II are incorrect

Step-by-step 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.

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