O Level Courses

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

O Level Chemistry MCQ - Complete Course

Proton and Nucleon Number MCQ App Download & e-Book PDF - 612

Apps:

O Level Chemistry App (Play Store) O Level Chemistry App (App Store)
MCQ: 612

The number of electrons in calcium is 20. outermost shall have as many as

  1. no electrons
  2. 1 electron
  3. 2 electrons
  4. more than 2 electrons

O Level Chemistry App & e-Book Tests PDF Download

Proton and Nucleon Number Study App: Free Download iOS & Android

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Proton and Nucleon Number Apps (Android & iOS)

Proton and Nucleon Number App

O Level Chemistry Apps (Android & iOS)

O Level Chemistry App

10th Grade Chemistry Apps (Android & iOS)

10th Grade Chemistry App

College Chemistry Apps (Android & iOS)

College Chemistry App