When an election in hydrogen atom jumps from the third excited state to the ground state, how would the de-Broglie wavelength associated with the electron change ? Justify your answer.

Explanation

In a hydrogen atom, the negatively charged electron ina circular orbit around the heavy positively chared charged nucleus. The centripetal force repuired by the electron is produced by the electron is produced by the attreactive force excerted by the nucleus on it .
The energy is radiated , when an electron jumps from higher to lower energy orbit and the energy is absorbed, when its jumps from lower to higher energy orbit.
`hv= E_(i)-E_(f)`
It is called Bohr's frequency condition.