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Sahay Sir > Question Answers > JEE Adv and Mains Chemistry 41 Years Solved Video Solutions 1979 - 2019 > Chemistry > Chapter 2 - Atomic Structure > The electron energy in hydrogen atom is given by En =(−21.7×10^−12 )n^2 erg. Calculate the energy required to remove an electron completely from the n = 2 orbit. What is the longest wavelength (in A ) of light that can be used to cause this transition.

The electron energy in hydrogen atom is given by En =(−21.7×10^−12 )n^2 erg. Calculate the energy required to remove an electron completely from the n = 2 orbit. What is the longest wavelength (in A ) of light that can be used to cause this transition.

at a distance r from the nucleus. The volume of this shell is 4 πr^2 dr. The qualitative sketch of the dependence of P on r is dr P is the probability of finding the 1s electron of hydrogen atom in a spherical shell of infinitesimal thickness