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Q.

A hydrogen atom emits a photon of wavelength 3635R when it is jumped from its nth excited state to the ground state. Then the quantum number ‘n’ is (R is Rudberg constant)

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a

8

b

7

c

6

d

5

answer is D.

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Detailed Solution

When an electron jump from nth state to ground state, then the Lyman–series of hydrogen spectrum will appear
 λnm=3635R,1λly=R[112−1n2]       35R36=R[n2−1n2]  ⇒n=6

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