Question

Fermions have spin value equal to:

• A. zero
• B. \( \frac{1}{2} \)
• C. 1
• D. 2

Hint:

A simple mnemonic: **F**ermions have **F**ractional spin (half-integer), while **B**osons have... not fractional spin (integer).

Answer 1

The Correct Option is B

In quantum mechanics, particles are classified into two fundamental types based on their intrinsic angular momentum, or spin. - Fermions: These are particles that have half-integer spin values (\(\frac{1}{2}, \frac{3}{2}, \frac{5}{2}, ...\)) in units of \(\hbar\). They obey the Pauli exclusion principle, which states that no two identical fermions can occupy the same quantum state simultaneously. Examples include electrons, protons, and neutrons (all have spin 1/2). - Bosons: These are particles that have integer spin values (\(0, 1, 2, ...\)) in units of \(\hbar\). They do not obey the Pauli exclusion principle. Examples include photons (spin 1) and Higgs bosons (spin 0). The option provided that is a half-integer spin is \(1/2\).