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Two electrons occupying the same orbital are distinguished by 

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azimuthal quantum number
spin quantum number
principal quantum number
magnetic quantum number.

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detailed solution

Correct option is B

For the two electrons occupying the same orbital values of  n,l and ml are same but ms is different, +12and-12

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Similar Questions

How many of the following set of quantum numbers are not the allowed set of quantum numbers

A) n = 3; l = 2; m =-3; s = -1/2

B) n = 3; l = 3; m = -3; s = +1/2

C) n = 6; l = 5; m = +5; s = +1/2

D) n = 2; l = 0; m = 0; s = -1

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