| Assertion: Electron gain enthalpy of oxygen is less than that of fluorine but greater than that of nitrogen. |
| Reason: Ionisation enthalpies of the elements follow the order N > O > F. |
A) If both assertion and reason are correct and reason is correct explanation for assertion.
B) If both assertion and reason are correct but reason is not correct explanation for assertion.
C) If assertion is correct but reason is incorrect.
D) If assertion is wrong, but reason is correct.
Correct Answer: C
Solution :
Correct reason : Since the atomic sizes decrease from N to F, the electron gain enthalpies of the elements tend to increase.
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