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Helium, Atom Model of Helium-4 with 2 Protons, 2 Neutrons and 2 Electrons Stock Vector - Illustration of model, background: 252635471
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Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it ... - YouTube
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1: (A) Helium-4 (He 4 ) consists of two electrons, two protons and two... | Download Scientific Diagram
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