An electron in hydrogen atom makes a transition n_1 → n_2 where n_1 and n_2 are principal quantum numbers of the two states. Assuming Bohr's model to…

An electron in hydrogen atom makes a transition $\displaystyle \mathrm{n}_1 \rightarrow \mathrm{n}_2$ where $\displaystyle \mathrm{n}_1$ and $\displaystyle \mathrm{n}_2$ are principal quantum numbers of the two states. Assuming Bohr's model to be valid, the time period of the electron in the initial state is eight times that in the final state. The possible values of $\displaystyle \mathrm{n}_1$ and $\displaystyle \mathrm{n}_2$ are :