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When an electron jumps from n = 4 to n = 2 then the change in angular momentum is approximately.

 

Option: 1

1.1 X 10-34 Js

 


Option: 2

2.2 X10-34 Js

 


Option: 3

3.3 X 10-34 Js

 


Option: 4

4.1 X 10-34 Js


Answers (1)

best_answer

The angular momentum of the electron in any nth Bohr Orbit is given by

 mvr=\frac{nh}{2\pi }

 \Delta L = 4\left ( \frac{h}{2\pi } \right ) - 2\left ( \frac{h}{2\pi } \right ) = \frac{h}{\pi }

\Delta L =\frac{6.626\times10^{-34}}{3.14} = 2.2\times10^{-34}

Hence, the correct answer is (2)

Posted by

himanshu.meshram

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