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Q.

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

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a

2516xeV

b

22516xeV

c

25 xeV

d

25×9x∈V

answer is B.

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Detailed Solution

The  ionization energy, is :

Question Image

 

 

 

 

ΔE=13.6×z2132−152=x

13.6×z212=E1

E1x=9×2516  ⇒E1=22516xeV

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