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11 March, 20:37

Which notation designates a possible value for a principal energy level in an atom?

px

2

+1/2

s

+1
Answers (1)
  1. 11 March, 20:59
    0
    2

    Explanation:

    There are four quantum numbers:

    Principal quantum number (n)

    Azimuthal quantum number (l)

    Magnetic quantum number (ml)

    Principal quantum number (n)

    It tell about the energy levels. It is designated by n.

    For example,

    If n = 2

    It means there are two energy level present.

    Azimuthal quantum number (l)

    The azimuthal quantum number describe the shape of orbitals. Its value for s, p, d, f ... are 0, 1, 2, 3. For l=3

    (n-1)

    4-1 = 3

    it means principle quantum is 4 and electron is present in f subshell.

    Magnetic quantum number (ml)

    It describe the orientation of orbitals. Its values are - l to + l. For l=3 the ml will be - 3 - 2 - 1 0 + 1 + 2 + 3.

    Spin quantum number (ms)

    The spin quantum number tells the spin of electron either its clock wise (+1/2) or anti clock wise (-1/2).

    If the electron is added in full empty orbital its spin will be + 1/2 because it occupy full empty. If electron is already present and another electron is added then its spin will be - 1/2.
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