Home/
Competitive Exams/
JEE Main & Advanced/
Chemistry/
Atomic Structure/
Question 600232
JEE Chemistry · Hard

Atomic Structure: Wave mechanical MCQ

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

Timer-based practiceDetailed answer reviewMobile-friendly flow
Wave mechanicalHardQuestion 600232

Question

Assertion (A): The exact position and momentum of an electron cannot be simultaneously determined with arbitrary precision. Reason (R): Electrons are waves with inherent uncertainty. Which is correct?
  1. A
    Both A and R are true, R explains A
    Correct
  2. B
    Both true but R does not explain A
  3. C
    A true, R false
  4. D
    A false, R true

Correct answer

Both A and R are true, R explains A

Explanation

Heisenberg uncertainty arises because electrons have wave-particle duality. The wave nature introduces inherent uncertainty — measuring position disturbs momentum. R correctly explains A.

Review Atomic Structure notesStart timed chapter practice