Question

if transition occur from n=5 to n=1 in hydrogen atom calculate the frequency of this transition​

Answer 1

Answer:

since n1=5andn1=2, this transition gives rise to a spectral line in the visible region of the balmer series. From equation

ΔE=2.18×10−18J[152−122]

4.58×10−19J

it is an emission energy

the frequency of the photon ( taking energy in terms of magnitude ) is given by

v=ΔEh

4.58×10−19J6.626×10−34Js

6.91×1014Hz

λ=cv=3.0×108ms−16.91×1014Hz=434nm