* Hydrogen's isotopes: Hydrogen has three isotopes:
* Protium (¹H): The most common, with one proton and no neutrons.
* Deuterium (²H): One proton and one neutron.
* Tritium (³H): One proton and two neutrons.
* Nuclear decay: Nuclear decay involves the spontaneous transformation of an unstable atomic nucleus into a different nucleus, often accompanied by the emission of particles like alpha, beta, or gamma rays.
* Hydrogen stability: Protium (¹H) is the most stable isotope of hydrogen. It doesn't undergo nuclear decay. Deuterium and tritium can undergo nuclear decay, but they don't decay into each other.
Instead of "hydrogen-hydrogen," you might be thinking of:
* Fusion: This is where two light nuclei combine to form a heavier nucleus, releasing energy. A famous example is the fusion of two deuterium nuclei to form helium.
* Nuclear reactions: There are various nuclear reactions involving hydrogen isotopes, like neutron capture, which can lead to the formation of heavier isotopes or the emission of particles.
To get a specific nuclear decay equation, you'd need to specify which isotopes of hydrogen you're interested in.
