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What is the signifcence of H, 2H, 3 H, H2, 2 He, Na, Snaco, ouco, CO, 460?
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What is the signifcence of H, 2H, 3 H, H2, 2 He, Na,
Snaco, ouco, CO, 460?

User Dong Ma
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1 Answer

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H=hydrogen,H2=hydrogen atoms,

User Nogusta
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