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QJEEAdv14Ch2579: JEE Advanced 2014 Chemistry - Class 11 JEEAdv14Ch2579 Solution: In an atom, the total number of electrons having quantum…
In an atom, the total number of electrons having quantum numbers n = 4, |ml| = 1 and ms = –1/2 is
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As n = 4, so l = 0, 1, 2, 3 which implies the orbitals are 4s, 4p, 4d and 4f.
Now, |ml | = 1 implies ml = +1 and −1. Therefore, l can be 3, 2, 1, as for l = 0, ml = 0.
For l = 1, ml = −1, 0, +1
For l = 2, ml = −2, −1, 0, +1, +2
For l = 3, ml = −3, −2, −1, 0, +1, +2, +3
Therefore, there are six possible orbitals with |ml | = 1 . Also, given that ms = −1/2 so six electrons are possible with ms = −1/2.