Assertion: Of all the elements, helium has the highest value of first ionization enthalpy.
Reason: Helium has the most positive electron gain enthalpy of all the elements.

Options

A. If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
B. If both (A) and (R) are correct, but (R) is not the correct explanation of (A)
C. If (A) is correct, but (R) is incorrect.
D. If both (A) and (R) are incorrect.

Answer

C

Explanation

Helium is the smallest inert gas.