Question : Which of the following has deuterium as one of its isotopes?
Option 1: Nitrogen
Option 2: Carbon
Option 3: Hydrogen
Option 4: Oxygen
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Correct Answer: Hydrogen
Solution : The correct answer is Hydrogen .
One electron, one proton and one neutron make up the deuterium isotope of hydrogen. In heavy water-moderated fission reactors, deuterium is employed as liquid D 2 O to slow neutrons without the high neutron absorption of regular hydrogen. Deuterium serves as a stable, non-radioactive isotope tracer.
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