Chemistry - Atomic Structure Question with Solution | TestHub

For hydrogen atom, energy of an electron in first excited state is $-3.4\mathrm{eV},\mathrm{K}.\mathrm{E}$. of the same electron of hydrogen atom is $x\mathrm{eV}$. Value of $x$ is ______ $\times 10^{-1}\mathrm{eV}$. (Nearest integer)