Q.

Angular velocity of electron in the ground state of Hydrogen atom is ω0.Then what will be the angular velocity of electron in the second excited state of He+ atom?

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a

2ω09

b

9ω016

c

4ω027

d

3ω04

answer is C.

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Detailed Solution

mvr=mωr2=n.h2π⇒ω∝nr2Also, r=r0.n2z  combining, ω∝z2n3∴ωHeωH=212x1333⇒ωHe=4ω027
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Angular velocity of electron in the ground state of Hydrogen atom is ω0.Then what will be the angular velocity of electron in the second excited state of He+ atom?