The only `e^-` in the H-atom resides under ordinary conditions on the first orbit when energy is supplied, the `e^-` moves to higher energy shells depending upon the amount of energy absorbed. When an e emits energy i.e., the `e^-` returns to the lowest energy state, from this Lyman, Balmer, Paschen, Bracket, Pfund series are there, so different spectral lines in the spectra of atoms correspond to different transitions of `e^-` s from higher to lower energy levels:
In an hydrogen atom which of the following transition should be associated with highest absorption of energy

Options

A. n = 1 to n = 4
B. n = 2 to n = 3
C. n = 4 to n = 1
D. n = 3 to n = 2

Answer

A

Explanation

Energy is absorbed when the transition is from lower level to upper level.