
helian (rasayan vigyaan)

helian (prateek "aich") helium paramanu kaa naabhik haye, joe doguna sakaratmak aaveshit catayan haye. helian" shabd "helium" aur "aayan" kaa ack sanyojan haye, aur vyavhaar mein vishesh roop seey helium-3 samasthaanik key naabhik koo sandarbhit kartaa haye, jisamen dou proton aur ack neutron hotaa haye. helium key anya sthir samasthaanik, helium-4, jisamen dou proton aur dou neutron hotey hain, key naabhik koo alfa kann kahaa jaataa haye.
yeh kann hydrogen key samasthaanik tritium key beeta-minus kshay mein dotter utpaad haih
kodata ack helian kann key dravyamaan koo iss prakaar bataata haye = 
helian taarakiya sanlayan mein proton-proton shrinkhala pratikriya mein madhyavarti utpaad hain.
ack antihelian ack helian kaa antipartical haye, jisamen dou antiproton aur ack antinutron hotaa haye.

