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Sahay Sir > Question Answers > N Awasthi Physical Chemistry > Chapter 2 - Atomic Structure (Level 1 and Level 2) > The angular momentum of an electron in a Bohr’s orbit of He+ is 3.1652 × 10^−34 kg−m^2/sec. What is the wave number in terms of Rydberg constant (R) of the spectral line emitted when an electron falls this level to the first excited state. [Use h = 6.626×10^−34Js].

The angular momentum of an electron in a Bohr’s orbit of He+ is 3.1652 × 10^−34 kg−m^2/sec. What is the wave number in terms of Rydberg constant (R) of the spectral line emitted when an electron falls this level to the first excited state. [Use h = 6.626×10^−34Js].

The ratio of the radius difference between 4th and 3rd orbit of H-atom and that of Li^2+ ion is: