MCQ
Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$:
Assertion $A$ : The stability order of +$1$ oxidation state of $\mathrm{Ga}$, In and $\mathrm{Tl}$ is $\mathrm{Ga}<\mathrm{In}<\mathrm{Tl}$.
Reason $R$ : The inert pair effect stabilizes the lower oxidation state down the group.
In the light of the above statements, choose the correct answer from the options given below :
- ✓Both $A$ and $R$ are true and $R$ is the correct explanation of $A$.
- B$A$ is true but $R$ is false.
- CBoth $A$ and $R$ are true but $R$ is $NOT$ the correct explanation of $A$.
- D$A$ is false but $R$ is true.