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Q.

The angular momentum of an electron present in the excited state of hydrogen is 1.5h/ $π$ .
The electron is present in

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a

Third orbit

b

Second orbit

c

Fourth orbit

d

Fifth orbit

answer is A.

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Detailed Solution

The angular momentum of electron in a shell is given as

$mvr = \frac{nh}{2 π} For n = 3 mvr = \frac{3 h}{2 π} = \frac{1.5 h}{π}$

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