Changes

Tritium is an [[isotope]] of ][hydrogen]], with a [[nucleus]] composed of a [[proton]] and two [[neutrons]]. It is very rare on [[Earth]], as it is only naturally produced by [[cosmic rays]], and decays into helium-3.

Tritium is an [[isotope]] of [[hydrogen]], with a [[nucleus]] composed of a [[proton]] and two [[neutrons]]. It is very rare on [[Earth]], as it is only naturally produced by [[cosmic rays]]. Tritium is [[radioactive]] and decays into helium-3. It has applications in [[nuclear fusion]] because tritium can undergo fusion with [[deuterium]] to produce [[helium]] and large amounts of energy.