Question
Tue March 06, 2012 By: Anjali Varghese

why tritium is more radioactive than other isotopes of hydrogen?

Expert Reply
Wed March 07, 2012

An element is radioactive if its atomic nuclei are unstable. The nucleus contains protons and neutrons; the electromagnetic force pushes the protons apart because they have the same charge, but the strong nuclear force pulls the protons and neutrons together. A nucleus is only stable if it has the right balance of protons and neutrons, and doesn't have any extra energy.

Tritium is more radioactive than other isotopes of hydrogen because it contain an unstable nucleus due to the presence of 1 proton and 2 neutrons.

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