How many hydrogen isotopes occur naturally on the Earth?

one

two

three

four

Three isotopes of hydrogen occur naturally on the Earth: the most frequent protium (1H), deuterium (2H) and tritium (3H). Other isotopes of hydrogen (4H-7H) were created in laboratories and are highly unstable.

Paweł Kołodziejczyk

frankieleon wikipedia → Category:Isotopes of hydrogen

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Answers by country

Pakistan

13%

77%

109

Ghana

17%

71%

Switzerland

15%

68%

India

18%

66%

1048

Unknown

20%

66%

Malaysia

12%

17%

63%

Australia

12%

15%

61%

113

the Netherlands

23%

60%

Nigeria

22%

57%

10%

118

Russia

20%

57%

12%

Poland

15%

25%

52%

15884

Austria

12%

25%

52%

Germany

11%

25%

50%

11%

534

Ukraine

25%

49%

14%

171

the United Kingdom

13%

29%

48%

345

the United States

17%

28%

45%

691

Singapore

18%

30%

45%

Canada

20%

25%

42%

10%

the Philippines

24%

27%

40%

Republic of Ireland

38%

19%

25%

16%

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