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Class 9 Chemistry e-Book's MCQs - Complete

Atoms Reaction MCQ App Free Download & e-Book - 128

MCQ:

Nobel gases are stable because they contain

  1. 7 electrons in valence shell
  2. 8 electrons in valence shell
  3. 5 electrons in valence shell
  4. 4 electrons in valence shell

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Atoms Reaction App (Android & iOS)

Atoms Reaction App (Android & iOS)

9th Grade Chemistry App (Android & iOS)

9th Grade Chemistry App (iOS & Android)

A level Chemistry App (Android & iOS)

A level Chemistry App (Android & iOS)

O Level Chemistry App (Android & iOS)

O Level Chemistry App (iOS & Android)