In chemistry, Heavy Hydrogen is another term for what?
Hydron (chemistry) transfer. Acid and bases are referred to as "proton" donors and acceptors correspondingly. However, although 99.9844% of natural hydrogen nuclei are protons, the remainder (about 156 per million in sea water) are deuterons (see deuterium). A rare triton also occurs (see tritium). Hydron (chemistry) In chemistry, a hydron is the general name for a cationic form of atomic hydrogen, represented with the symbol . However, this term is avoided and instead "proton" is used, which strictly speaking refers to the cation of protium, the most common isotope of hydrogen. The term "hydron" includes cations of hydrogen regardless of their isotopic
Heavy metals with the term "heavy element". For example, in discussing the history of nuclear chemistry, Magee notes that the actinides were once thought to represent a new heavy element transition group whereas Seaborg and co-workers "favoured ... a heavy metal rare-earth like series ...". In astronomy, however, a heavy element is any element heavier than hydrogen and helium. In 2002, Scottish toxicologist John Duffus reviewed the definitions used over the previous 60 years and concluded they were so diverse as to effectively render the term meaningless. Along with this finding, the heavy metal status of some metals is occasionally challenged on