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A unielectronic species is in some excit...

A unielectronic species is in some excited state 'A' and on absorbing a photon of energy 'x' eV gets promoted to a new state 'B' . On de-excitation back to the ground state a total of 10 different wavelengths were emitted in which seven have energy greater than 'x' eV . What will be the ionisation energy ?

A

25 x eV

B

`(225)/(16)` xeV

C

`(25)/(16)` xeV

D

`25 xx 9` x eV

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The correct Answer is:
B
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