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Nucleus: Common Terms

The heavy ato...

Question

The heavy atom of hydrogen has ....... neutrons.

A

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B

1

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C

2

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D

3

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Solution

The correct option is B 1
Deuterium (an isotope of hydrogen) is also called heavy hydrogen. It has atomic number $1$ and mass number $2$ . Therefore, no. of neutrons $= 2 - 1 = 1.$

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