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O Level Chemistry MCQs – Certification Test 61

Proton and Nucleon Number Trivia (Question 61) – Study App & e-Book Download

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MCQ: 61

If the nucleon (mass) and proton (atomic) number is 40 and 20 respectively, the element is

  1. chlorine
  2. phosphorus
  3. potassium
  4. calcium

Proton & Nucleon Number Placement Tests – O Level Chemistry App & e-Book Trivia

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