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Periodic Trends MCQs App Download (Free) & e-Book - 514

MCQ:

Iso-electronic species are substances having electrons

  1. Same
  2. Different
  3. Eight electrons
  4. Two electrons

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Periodic Trends App (Android & iOS)

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A level Chemistry App (Android & iOS)

A level Chemistry App (iOS & Android)

O Level Chemistry App (Android & iOS)

O Level Chemistry App (Android & iOS)

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College Chemistry App (iOS & Android)