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# One of the hard problems I have ever tackled

A gas of identical H-Like atom has some atoms in the lowest energy level A and somme atoms in a particular upper energy level B and there are no atoms in any other energy level. The atoms of the gas make transition to a higher energy level by absorbing monochromatic light of photon energy 2.7eV.

Subsequently the atoms emit radiation of only six different photon energies...some of the emitted photons have energy 2.7eV Some have more or some have less than 2.7eV. Find the ionisation energy for the gas atoms?

Note by Sarvesh Dubey
2 years, 9 months ago

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Don't you think that you should have used the term "electrons" instead of "atoms" at some places? @sarvesh dubey

- 2 years, 9 months ago

Yes I thought of it but I presented the question as it was!!! P bahadur chp-3...@Manish Dash

- 2 years, 9 months ago

- 2 years, 9 months ago

Pls tell ur approach when whoever solves this question...

- 2 years, 9 months ago