What is the number of neutrons in a radioactive isotope of hydrogen?

What are the isotopes of Hydrogen?

The rare isotope of hydrogen is______

If the atomic number of an atom is Z the number of neutrons is N and mass number is A then which of the following relation is correct?

Define Isotope

What are isotopes? Mention the isotopes of hydrogen

What are isotopes ?

What is Isotope?

what is radioactive pollution

What is meant by half life of a radioactive element?