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Chemistry, 25.08.2019 18:10 grangian06

Which total mass is the smallest?
(1) the mass of 2 electrons
(2) the mass of 2 neutrons
(3) the mass of 1 electron plus the mass of 1 proton
(4) the mass of 1 neutron plus the mass of 1 electron

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Which total mass is the smallest?
(1) the mass of 2 electrons
(2) the mass of 2 neutron...

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