Q25 / 160 · TS EAMCET 2023 (12 May Shift 2) · Chemistry

Assertion (A): In group 15 elements nitrogen does not form pentahalides Reason (R): Nitrogen can exhibit +5 oxidation state The correct option among the following is

  • A
    (A) and (R) are true. (R) is the correct explanation of (A)
  • Correct answer
    B
    (A) and (R) are true, but (R) is not correct explanation of $(\mathrm{A})$
  • C
    (A) is true but (R) is false
  • D
    (A) is false but (R) is true

Solution

Nitrogen is notable to form pentahalides as it does not have vacant d-orbitals available for expanding the octet. Thus, Assertion (A) is a correct statement. Nitrogen exhibits an oxidation state of +5 using all five of its valence electrons. Thus, reason (R) is a correct statement. The Reason (R) is not a correct explanation of the Assertion (A).

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

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