Free Printable Protons Neutrons and Electrons Practice Worksheets - Free Printable

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- H: Atomic Mass = 1, Neutrons = 0, Electrons = 1
- He: Element Symbol = He, Atomic Mass = 4, Protons = 2
- Li: Element Symbol = Li, Atomic Mass = 7, Neutrons = 4, Electrons = 3
- Be: Element Symbol = Be, Atomic Mass = 9, Protons = 4
- B: Element Symbol = B, Atomic Mass = 11, Neutrons = 6
- C: Neutrons = 6, Electrons = 6
- N: Atomic Mass = 14, Protons = 7, Electrons = 7
- O: Atomic Mass = 16, Neutrons = 8, Electrons = 8
- F: Element Symbol = F, Atomic Mass = 19, Protons = 9
- Ne: Element Symbol = Ne, Atomic Mass = 20, Neutrons = 10, Electrons = 10
- Na: Element Symbol = Na, Atomic Mass = 23, Protons = 11
- Mg: Element Symbol = Mg, Atomic Mass = 24, Neutrons = 12, Electrons = 12
- Al: Atomic Mass = 27, Neutrons = 14
- Si: Atomic Mass = 28, Electrons = 14
- P: Atomic Mass = 31, Neutrons = 16, Protons = 15

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