Question

The electron in the hydrogen atom undergoes transition from higher orbitals to orbital of radius 211.6 pm. This transition is associated with:

• A. Brackett series
• B. Lyman series
• C. Paschen series
• D. Balmer series

Answer 1

The correct option is D Balmer series

For $hydrogen$ atom, the radius of nth orbit, $r_n=52.9pm\times n^2$

$211.6pm=52.9pm\times n^2$

$n^2=4$

$n=2$

Hence, the transition is from a higher orbit to the second orbit.
This corresponds to the Balmer series.