Answer:
Answered
Explanation:
Energy of electron in hydrogen atom is given by
E_n=
now as becomes large
ΔE= E_n+1 - E_n= 18.6 eV(1/n^2- 1/(n+1)^2)
now, as n increases ΔE_n decreases
in the limit n→∞ , ΔE_n→0. Thus with increase in n, energy level come close to each other.
b) Since, the wavelength of the rays depends upon the energy level hence they too come closer.
c)Near the ionization threshold the energy level of the atoms come closer and the total energy of the electron becomes almost so that it can be easily removed from the orbit.