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Mixed Combination of Cells

The magnetic ...

Question

The magnetic moment developed due to revolution of electron in first orbit is $M_{0}$ then the magnetic moment when electron is in third orbit will be -

A

4 M_{0}

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B

3 M_{0}

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C

2 M_{0}

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D

M_{0}

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Solution

The correct option is B $3 M_{0}$
We know that, magnetic moment,

$M \propto n$

So, its magnetic moment will become three times when the electron is in third orbit.

Hence, option $(C)$ is the correct answer.

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