Question

Assertion: The first ionization energy of Be is greater than that of B.
Reason: 2p-orbital is lower in energy than 2s-orbital.
A. If both assertion and reason are Correct, but reason is the Correct explanation of the assertion
B. If both assertion and reason are Correct, but reason is Not the Correct explanation of the assertion
C. If assertion is Correct, but reason is Incorrect
D. If assertion in Incorrect, but reason is Correct.

Answer 1

Correct Answer - C
Assertion is correct but reason is incorrect because the energy of 2s orbital is less than 2p orbital.