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Question

Deuterium is an isotope of hydrogen and is represented by 21H. How many deuterium atoms are present in heavy water?


A

1

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B

2

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C

3

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D

4

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Solution

The correct option is B

2


Deuterium is an isotope of hydrogen. It has only one electron. The chemical formula of heavy water is D2O. Thus, there are two deuterium atoms in a molecule of a heavy water.


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