The maximum wavelength of electromagnetic radiation which can ionize this atom is 320 nm or 320 x 10^-9 m.
The ionization energy is the minimum amount of energy that should be given to an element to eject electrons out of it i.e ionizing it.
The relation between Energy(E) and wavelength(λ) is as follows
E = hc/λ
Here h = Planck’s Constant = 6.626 x 10-34 J s
c = speed of light = 3 x 10^8 m/s
λ = wavelength of electromagnetic radiation
Putting the given values in the above equation
6.24 x 10^-19 J = 6.626 x 10^-34 x 3 x 10^8/ λ
λ = 320 x 10^-9 m.
Thus, the maximum wavelength of electromagnetic radiation which can ionize this atom is 320 nm or 320 x 10^-9 m.
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