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Question

Maximum number of electrons in an atom that can have the quantum numbers n=4, me=+1 is:

A
3
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B
5
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C
6
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D
8
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Solution

The correct option is C 6
We know for a given n, the value of me=+l to l and l=0 to (n1).

For n=4
l=0 me=0
l=1 me=1,0,+1;
l=2 me2,1,0,+1,+2 l=3 me=3,2,1,0,+1,+2,+3
There are three orbitals having me=+1. Thus maximum number of electrons in them will be 3×2=6.

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