The electron in the n^th orbit of Li^2+ is excited to ( n +1 ) orbit using the radiation of energy 1.47 × 10^-17 J (as shown in the diagram). The…

The electron in the $\displaystyle \mathrm{n}^{\text {th }}$ orbit of $\displaystyle \mathrm{Li}^{2+}$ is excited to ( $\displaystyle \mathrm{n}+1$ ) orbit using the radiation of energy $\displaystyle 1.47 \times 10^{-17} \mathrm{~J}$ (as shown in the diagram). The value of n is $\displaystyle \_\_\_\_$ Given: $\displaystyle \mathrm{R}_{\mathrm{H}}=2.18 \times 10^{-18} \mathrm{~J}$