Chemistry, 15.08.2021 01:00 mariahrpoulin9630
a hydrogen atom usually consists of 1 proton and 1 electron. a helium atom usually contains 2 protons, 2 neutrons, and 2 electrons. compare the mass of 2 hydrogen atoms to the mass of 1 helium atom.
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a hydrogen atom usually consists of 1 proton and 1 electron. a helium atom usually contains 2 proton...
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