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Which of the following sets of quantum number is correct for an electron in 4f orbital ?

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$n = 4, l = 3, m = + 4, s = + 1 / 2$

$n = 4, l = 4, m = - 4, s = + 1 / 2$

$n = 4, l = 3, m = + 1, s = + 1 / 2$

$n = 3, l = 2, m = - 2, s = + 1 / 2$

answer is C.

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Detailed Solution

For a 4f orbital, we have

Principal quantum number, n = 4; Azimuthal quantum number , l = 3

Magnetic quantum number , m= any one value from +3,+2, +1, 0. $- 1, - 2, - 3$

For an electron in this orbital, spin quantum number, s= either +1/2 or $- 1 / 2$

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