Question -
Answer -
For ground level, n1 = 1
Let E1 be the energy of this level. It is known that E1 is related with n1 as:
The atom is excited to a higherlevel, n2 = 4.
Let E2 be the energy of this level.
The amount of energy absorbed bythe photon is given as:
E = E2 − E1
For a photon of wavelengthλ, the expression of energy is written as:
Where,
h = Planck’s constant = 6.6 × 10−34 Js
c = Speed of light = 3 × 108 m/s
And, frequency of a photon isgiven by the relation,
Hence, the wavelength of thephoton is 97 nm while the frequency is 3.1 × 1015 Hz.