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21 July, 10:52

How many electron in an atom could have these sets of quantum numbers? n=5 l=3?

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  1. 21 July, 12:13
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    14

    Explanation:

    There are 4 quantum numbers:

    n: principal quantum number - describes the electron shell (varies from 1 to 7);

    l: azimuthal quantum number - describes the subshell (varies from 0 to 3);

    m: magnetic quantum number - describes the specific orbital (varies from - l to + l passing by 0);

    s: spin quantum number - describes the spin of the electron (-1/2 or + 1/2).

    In each orbital (described by m) the maximum number of electrons is 2, so, for subshell 3, the magnetic numbers are - 3,-2,-1,0,+1,+2, and + 3. So there are 7 orbitals. The maximum number of electrons that can have n=5 and l = 3 is 14.
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