The isotope deuterium of hydrogen has
(a) no neutrons and one proton
(b) one neutron and two protons
(c) one electron and two neutron
(d) one proton and one neutron.

Correct: (d) one proton and one neutron.

Explanation: Deuterium is a hydrogen isotope consisting of one proton, one neutron, and one electron.

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Updated on: 14-Mar-2023

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