Please follow the Aufbau principle, Pauli exclusion principle and Hund's rule to determine the four quantum numbers (principle, angular, magnetic, spin) for the final electron of Scandium.

3, 2, - 2, + 1 / 2

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5, 1, 0, - 1 / 2

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4, 0, 0, - 1 / 2

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4, 1, - 1, - 1 / 2

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Solution

The correct option is C $3, 2, - 2, + 1 / 2$
Scandium has electronic configuration of $[A r] 4 s^{2} 3 d^{1}$ thus last electron belongs to $3 d$ orbital for which $n = 3, l = 2, m_{l} = - 2, - 1, 0, 1, 2 (a n y o n e), m_{s} = 1 / 2 o r - 1 / 2$
thus option A is correct

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Please follow the Aufbau principle, Pauli exclusion principle and Hund's rule to determine the four quantum numbers (principle, angular, magnetic, spin) for the final electron of Scandium.

The correct option is C 3,2,−2,+1/2Scandium has electronic configuration of [Ar]4s23d1 thus last electron belongs to 3d orbital for which n=3,l=2,ml=−2,−1,0,1,2 (any one),ms=1/2 or −1/2thus option A is correct

The correct option is C $3, 2, - 2, + 1 / 2$
Scandium has electronic configuration of $[A r] 4 s^{2} 3 d^{1}$ thus last electron belongs to $3 d$ orbital for which $n = 3, l = 2, m_{l} = - 2, - 1, 0, 1, 2 (a n y o n e), m_{s} = 1 / 2 o r - 1 / 2$
thus option A is correct