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प्रश्न
Assertion (A): Molecular nitrogen is less reactive than molecular oxygen.
Reason (R): In molecular nitrogen two nitrogen atoms are joined by double bonds.
पर्याय
If both A and R are true, and R is the correct explanation of A.
If both A and R are true, but R is not the correct explanation of A.
If A is true, but R is false.
If both A and R are false.
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उत्तर
If A is true, but R is false.
Explanation:
The assertion is entirely true because molecular nitrogen (N2) is highly inert and less reactive than molecular oxygen (O2) at room temperature due to its exceptionally high bond dissociation energy. However, the reason is completely false because the two nitrogen atoms in an N2 molecule are actually held together by an exceptionally strong triple covalent bond (N ≡ N), not a double bond.
