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Question

In an atom, the total number of electrons having quantum numbers n=3, |ml|=0 and ms=12 is :

A
2
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B
4
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C
3
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D
6
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Solution

The correct option is C 3
Given,
|ml|=0 means ml is zero
Since n = 3, the possible values of `l' are 0,1 and 2 .
The orbitals in shell 3 with m = 0 are, 3s orbital,one of the 3p orbitals and also one of the 3d orbitals. So total of 3 orbitals.

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