2H, imwe isotope yakagadzikana yehydrogen, inozivikanwa se deuterium uye ine proton imwe ne neutron imwe mu nucleus. Deuterium yose muchadenga inofungidzirwa kuti yakabudiswa panguva yeBig Bang, uye yakatsungirira kubva panguva iyoyo. Deuterium haisi radioactive, uye haimiriri ngozi yakakosha yehupfu. Mvura yakafumiswa mumamorekuru anosanganisira deuterium panzvimbo yehydrogen yakajairika inonzi mvura inorema. Deuterium nemakemikari ayo anoshandiswa sechinhu chisina-radioactive muchirongwa chemakemikari uye mumasvinu e1H-NMR spectroscopy. Mvura inorema inoshandiswa seyeutron moderator uye inotonhorera yezvigadzirwa zvenyukireya. Deuterium zvakare inogona kushandiswa semutengo wekutengesa mafuta enyukireya.
2H