The quantum numbers +(1)/(2) and -(1)/(2) for the electron spin represent

JIPMER 2010

Exam: JIPMER
Year: 2010
Subject: Chemistry
Chapter: Structure of Atom

JIPMER 2010 · Chemistry · Structure of Atom

The quantum numbers +(1)/(2) and -(1)/(2) for the electron spin...

The quantum numbers

+\frac{1}{2}

and

-\frac{1}{2}

for the electron spin represent

Options

Arotation of the electron in clockwise and anticlockwise direction respectively
Brotation of the electron in anticlockwise and clockwise direction respectively
Cmagnetic moment of the electron pointing up and down respectively
Dtwo quantum mechanical spin states which have no classical analogues

Correct answer

D. two quantum mechanical spin states which have no classical analogues

Step-by-step solution

The quantum numbers

+\frac{1}{2}

and

-\frac{1}{2}

indicate the rotation of electrons around its axis in opposite directions. Hence, they represent the two quantum mechanical spin states which have no classical analogues.

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