The angular momentum of an electron in a Bohr's orbit of `He^(+)` is `3.1652xx10^(-34)` kg-`m^(2)`/sec. What is the wave number in terms of Rydberg constant (R ) of the sepectral line emitted when an electron falls from this level to the first excited state.l [ Use h`=6.626xx10^9-34)` Js]
