Which of the following is not a hydrogen isotope?
tritium
protium
iridium
deuterium
Protium, deuterium and tritium are hydrogen isotope varieties. Iridium is a chemical element.
reach: rather globalchemistryelementshydrogenisotopes
Answers by country
tritium
protium
iridium
deuterium
answers
Estonia18
Italy41
Ghana17
India238
Pakistan27
Belarus18
the Netherlands21
the Philippines19
Nigeria49
Poland4531
Russia53
the United Kingdom76
Australia42
Germany189
Austria34
the United States168
Republic of Ireland16
Greece19
Ukraine27
Spain19