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Question

Angular momentum in an orbit is 3n. The value of n is :
  1. 1
  2. 3
  3. 2
  4. 4

A
3
B
4
C
2
D
1
Solution
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Bohr's Model helps us to find the Angular Momentum of an electron in nth orbit.
This is given by:
mvr=nh2π
where, n can take values as 1,2,3,...... and is the number of the orbit in which the electron is present.
In the question, the value of angular momentum is 3n, hence the value of n is 3.

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