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A deuterium nucleus contains how many protons and neutrons?
A1 proton, 2 neutrons
B1 proton, 1 neutron
C2 protons, 1 neutron
D2 protons, 2 neutrons
Answer & Solution
Correct answer: B. 1 proton, 1 neutron
Deuterium is hydrogen with Z = 1 and A = 2, so one proton and one neutron.
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