Chemistry Structure of Atom Quantum Number, Electronic Configuration and Shape of Orbitals Single Correct MCQ
Published on: August 12, 2026

Two values of spin quantum numbers i.e., +1/2 and -1/2 represent.

A
Up and down spin of the electrons respectively
B
Two quantum mechanic spin states which refer to the orientation of spin of the electron
C
Clockwise and anti – clockwise spin of the electrons respectively
D
Anti – clockwise and clockwise spin of the electrons respectively.

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The correct answer is:
B

Spin angular momentum of the electron, a vector quantity can have two orientations relative to the chosen axis. These two orientations take the values of +1/2 or

-1/2 and are called two spin states of the electrons.

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