The angular momentum of an electron in a Bohr' orbti or He+ is 3.1652 x 10–34 kg-m2/. What is the wave number in terms of Rydberg constant (R) of the spectral line emitted when an electron falls from this level to the excited sate ? (Use h = 6.626x10–34 J-*)
(a) 3R
(b) 5R/9
(c) 3R/4
(d) 8R/9
