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SAT® Subject Test in Chemistry

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Difficult

Quantum Number Electron 2

SATCHM-VFJEGA

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 the listed element.

Helium

Example: The final electron of Be is 4.

A

$3,2,-2,+1/2$

B

$5,1,0,-1/2$

C

$4,0,0,-1/2$

D

$1,0,0,-1/2$

E

$4,2,-1,+1/2$