Class 9 Chemistry Quiz App Download | Periodicity and Properties Quiz e-Book PDF | 20
Class 9 Chemistry MCQs (Grade 9) From Textbook

Class 9 Chemistry MCQs – Certification Test 20

Periodicity and Properties Quiz (Question 20) – App & e-Book Download

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MCQ 20: Across the period the atomic size decreases due to:

  1. shielding effect
  2. photoelectric effect
  3. increase in nuclear force of attraction
  4. decrease in nuclear force of attraction

Class 9 Chemistry Quiz App & e-Book – Periodicity and Properties Certification Guide

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