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Isotopes Quiz App Download & e-Book PDF - 219

MCQ 219:

The number of isotopes which oxygen atom has is

  1. three
  2. five
  3. nine
  4. two

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Isotopes App (Android & iOS)

Isotopes App (Android & iOS)

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College Chemistry App (iOS & Android)

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10th Grade Chemistry App (Android & iOS)

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O Level Chemistry App (iOS & Android)