Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).…
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) :
Ionisation enthalpy increases along each series of the transition elements from left to right. However, small variations occur.
Reason (R) :
There is corresponding increase in nuclear charge which accompanies the filling of electrons in the inner d-orbitals.
In the light of the above statements, choose the most appropriate answer from the options given below.
Both $(\mathbf{A})$ and $\mathbf{( R )}$ are correct and $(\mathbf{R})$ is the correct explanation of $(\mathbf{A})$
Both $(\mathbf{A})$ and $(\mathbf{R})$ are correct but $(\mathbf{R})$ is not the correct explanation of $(\mathbf{A})$
$(\mathbf{A})$ is correct but (R) is not correct
(A) is not correct but (R) is correct
Solution
- Due to an increase in nuclear charge which accompanies the filling of the inner $d$ orbitals, there is an increase in ionisation enthalpy along each series of the transition elements, from left to right. However, many small variations occur.