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  • 21-11-2018
  • Biology
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Please help I will Mark Brainly!!!

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mendietajose513
mendietajose513 mendietajose513
  • 21-11-2018

Oxygen

Protons: 8  Neutrons: 8 Electrons: 8

Aluminum

Protons: 13 Neutrons: 14 Electrons: 13

Fluorine

Atomic number: 9 Mass: 19

Silicon

Atomic number: 14 Mass: 28

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