Question

The H$_{\alpha}$ line of hydrogen

• A. has a wavelength smaller than that of the $H_{\beta}$ line
• B. has a wavelength $4860\, �$
• C. is emitted in the transition from the second excited state to the first excited state
• D. has a wavelength $6060 �$.

Answer 1

Answer: (C)

is emitted in the transition from the second excited state to the first excited state

Answer 2

$H _{\alpha}$ line is emitted, when the electron jumps from the $n=3$ orbit (second excited state) to the $n=2$ orbit (first excited state). And $H_{\beta}$ line is also emitted, when the electron jumps from the $n=4$ orbit to the $n=2$ orbit.