Which isotope of hydrogen is radio active?

Which isotope of Hydrogen is used in atomic reactors?

In nuclear reactors, heavy water is used as 'moderator'. What is a moderator and which isotope of hydrogen is present in it?

In nuclear reactors, heavy water is used as 'moderator'. a. What is a moderator and whịch isotope of hydrogen is present in it?

Which isotope of Uranium is used in atomic reactors as fuel?

Name the oxide of isotope of hydrogen used in nuclear reactor

Which are the Isotopes of Hydrogen.

Name the isotope of hydrogen which contains equal number of protons and neutrons.

The radio active isotope of hydrogen is __________

Write the names of isotopes of hydrogen. What is the mass ratio of these isotopes?