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The sum number of neutrons and protons in radioactive isotopes of hydrogen is:
1. 4
2. 6
3. 3
4. 5

1 Answer

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by (101k points)
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Best answer
Correct Answer - Option 3 : 3

The​ correct answer is 3.

 

  • An atom of the same element having the same atomic number and different mass number are known as isotopes.
  • Isotope was discovered by Frederick Soddy.
  • Hydrogen has three main isotopes:
    1. Protium- 1H1
    2. Deuterium- 1H2
    3. Tritium- 1H3
  • Tritium is the radioactive isotope of hydrogen.
  • Atomic number of tritium is 1.

 

  • Tritium consists of one proton and two neutrons in its nucleus.
  • Mass number of tritium is 3(one proton + two neutrons).
  • The sum number of neutrons and protons tritium is 3.
  • Tritium is a rarely occurring isotope of hydrogen.
  • The half-life period of tritium is around 12.4 years.

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