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Download Periodic Table: O Level Chemistry MCQs App & e-Book PDF - 306

MCQ 306:

First element in periodic table to have 8 valence electrons is

  1. nitrogen
  2. oxygen
  3. fluorine
  4. neon

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Periodic Table O Level Chemistry Textbook App: Free Download (Android & iOS)

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Periodic Table O Level Chemistry App (Android & iOS)

Periodic Table O Level Chemistry App (Android & iOS)

O Level Chemistry App (Android & iOS)

O Level Chemistry App (iOS & Android)

SAT Chemistry App (Android & iOS)

SAT Chemistry App (Android & iOS)

A level Chemistry App (Android & iOS)

A level Chemistry App (iOS & Android)