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For hydrogen like system, (I) Ratio of...

For hydrogen like system,
(I) Ratio of magnetic moment to angular momentum is `e//2m`.
(II) energy of the electron is directly proportional to `1//n^(2)`.
(III( angular momemtum varies inversely with `n`.
(IV) radius of an orbit is inversely related to `n`.

A

`I,II`

B

`II,IV`

C

`I,II,IV`

D

`III,IV`

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The correct Answer is:
A
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