The energy absorbed in the transition of the electron from n=2 to 1 in H-atom will be
10.2 meV
3.4 meV
13.6 meV
12.75 meV
As we learnt in
Lyman Series spectrum -
Where
This lies in Ultraviolet region
-
where for Lyman series
Z=1 (hydrogen)
Rydberg constant, R =
Energy absorbed =
= = 10.2 meV
Option 1)
10.2 meV
Option 2)
3.4 meV
Option 3)
13.6 meV
Option 4)
12.75 meV