The Hα line of hydrogen
(a) has a wavelength smaller than that of the Hβ line
(b) has a wavelength 4860 A
(c) is emitted in the transition from the second excited state to the first excited state
(d) has a wavelength 6060 A.
The correct option is (c) is emitted in the transition from the second excited state to the first excited state.
Explanation:
Hαline is emitted, when the electron jumps from the n = 3 orbit (second excited state) to the n = 2 orbit (first excited state). And Hβ line is also emitted, when the electron jumps from the n = 4 orbit to the n = 2 orbit.
