Question

In the infrared region of the atomic spectrum
of hydrogen, a line is obtained at 3802 cm
Calculate the energy of this photon (h = 6.626
x 10-34 J sec). ​

Answer 1

Explanation:

We know that ,

Frequency(v) can be calculated as follows:

λv = c

where λ = 3802 x 10-2 m

c = 3 x 108 m/s

Frequency, v = (3 x 108 m/s) / 3802 x 10-2 m

= 7.89 x 106 s-1

Energy = hv

where h = 6.626 x 10-34 J/s

Hence, energy of the photon

= 6.626 x 10-34 J/s x 7.89 x 106 s-1

= 52.279 x 10-28 J