Question

Applying Bohr's model calculate the energy and frequency of radiation emitted
when an electron in hydrogen atom returns from 5th energy level to 2nd energy
level.

plz answer properly​

Answer 1

$\huge\red{ANSWER}$

Let,

wave number =R

H

[(n1 )21 − (n2 ) 21 ]

On substituting n

1

=2,n

2

=4,R

H

=109678 in equation,

wave number =109678×

16

3

Also, λ=

wavenumber

1

or λ=406nm

Hence, visible region is the Answer