JEE · NEET Previous Year Question

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

Topic: JEE PYQ

Answer: B. Full step-by-step solution below.

  1. A(A) and (R) are true. (R) is the correct explanation of (A)
  2. B(A) and (R) are true, but ( ) is not correct explanation of (A)
  3. C(A) is true but (R) is false
  4. D(A) is false but (R) is true

Correct answer: B

Solution

(b) Nitrogen is not able 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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