Tritium (from Ancient Greek τρίτος (trítos) 'third'), or hydrogen-3 (symbol T or 3H), is a rare and radioactive isotope of hydrogen with a half-life of 12.32 years. The tritium nucleus (t, sometimes called a triton) contains one proton and two neutrons, whereas the nucleus of the common isotope hydrogen-1 (protium) contains one proton and no neutrons, and that of non-radioactive hydrogen-2 (deuterium) contains one proton and one neutron.
Tritium (from Ancient Greek τρίτος (trítos) 'third'), or hydrogen-3 (symbol T or 3H), is a rare and radioactive isotope of hydrogen with a half-life of 12.32 years. The tritium nucleus (t, sometimes called a triton) contains one proton and two neutrons, whereas the nucleus of the common isotope hydrogen-1 (protium) contains one proton and no neutrons, and that of non-radioactive hydrogen-2 (deuterium) contains one proton and one neutron.
Source: Wikipedia "Tritium" · CC BY-SA 4.0
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