Assertion (A) : The configuration of B atom cannot be `1s^(2)2s^(2)`
Reason (R ) : Hund's rule demands that the configuration should display maximum multiplicity

Options

A. If both (A) and (R ) correct and (R ) is the correct explanation for (A)
B. If both (A) and (R ) correct and (R ) is the correct explanation for (A)
C. If (A) is correct but (R ) is incorrect
D. If (A) is incorrect but (R ) is correct

Answer

D

Explanation

Configuration of `B = 1s^(2)2s^(2)3s^(2)`