Question
Given below are two statements : one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$
Assertion $(A)$ : The first ionization enthalpy of $3 d$ series elements is more than that of group $2$ metals
Reason $(R)$ : In $3d$ series of elements successive filling of d-orbitals takes place.
In the light of the above statements, choose the correct answer from the options given below :
