Class 9 Chemistry Learning App Download | Atomic Structure Experiments MCQs e-Book PDF
Class 9 Chemistry MCQs (Grade 9) From Textbook

Class 9 Chemistry MCQs – Certification Test 74

Atomic Structure Experiments MCQs (Question 74) – Learning App & e-Book Download

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MCQ 74: Electrons revolve only in those orbits with angular momentum as an:

  1. half integral multiple of 'h'
  2. integral multiple of 'h'
  3. integral multiple of h ⁄ 2π
  4. half integral multiple of 2π

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