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Proton and Nucleon Number Learning App Download - O Level Chemistry Apps (iOS & Android)

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Proton and Nucleon Number Quiz App Download & e-Book PDF - 61

Apps:

O Level Chemistry App (Play Store) O Level Chemistry App (App Store)
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

O Level Chemistry App & e-Book Tests PDF Download

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O Level Chemistry Apps (Android & iOS)

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