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Question 30020
NEET Chemistry · Hard

Classification of Elements and Periodicity in Properties: Concept summary MCQ

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Concept summaryHardQuestion 30020

Question

Periodic classification works because properties repeat after certain intervals due to repetition of:

  1. A
    valence-shell electronic configuration
    Correct
  2. B
    atomic mass only
  3. C
    nuclear density
  4. D
    crystal defects

Correct answer

valence-shell electronic configuration

Explanation

Chemical properties mainly depend on outer-electron arrangement.

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