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Question: Answered & Verified by Expert
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
Chemistryp Block Elements (Group 15, 16, 17 & 18)TS EAMCETTS EAMCET 2023 (12 May Shift 2)
Options:
  • A (A) and (R) are true. (R) is the correct explanation of (A)
  • 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:
1820 Upvotes Verified Answer
The correct answer is: (A) and (R) are true, but (R) is not correct explanation of $(\mathrm{A})$
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).

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