question_answer

A hypothetical atom has only three energy levels. The ground level has energy, \[{{E}_{1}}=-8eV.\] The two excited states have energies, \[{{E}_{2}}=-6eV\] and \[{{E}_{3}}=-2eV.\] Then which of the following wavelengths will not be present in the emission spectrum of this atom?                               [JEE ONLINE 12-05-2012]

A) 207 nm

B) 465 nm

C) 310 nm

D) 620 nm

Correct Answer: B

Solution :

[b]