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

18

41

17

238

27

18

20

19

49

4499

52

72

42

34

181

16

160

19

27

18