Home/
Competitive Exams/
JEE Main & Advanced/
Chemistry/
Atomic Structure/
Question 600216
JEE Chemistry · Easy

Atomic Structure: Spin Quantum Number MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Spin Quantum NumberEasyQuestion 600216

Question

The spin quantum number (ms) can have values:
  1. A
    Only +1/2
  2. B
    Only −1/2
  3. C
    +1/2 or −1/2
    Correct
  4. D
    0, +1, −1

Correct answer

+1/2 or −1/2

Explanation

ms = ±1/2 for electrons. Positive is often called 'spin up' (↑) and negative 'spin down' (↓).

Review Atomic Structure notesStart timed chapter practice