Multiple choice general knowledge science & technology

What is the spin angular moment of electron

  1. 1/2

  2. 0

  3. -1/2

  4. 1

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The electron is a spin-1/2 particle, meaning its spin angular momentum quantum number s = 1/2. This gives the electron two possible spin states: spin-up (+1/2) and spin-down (-1/2), represented by the spin quantum number ms = ±1/2. The spin angular momentum is actually (s × h)/(2π) = (1/2) × (h)/(2π), where h is Planck's constant. Option A correctly gives the spin quantum number as 1/2. Option B (0) would be for spin-0 particles, option C is just one of the two possible states, and option D would represent spin-1.