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.

Answers distribution

one
two
three
four
answers
flagDenmark
0%
10%
80%
10%
10
flagIndia
6%
12%
74%
4%
143
flagthe United Arab Emirates
6%
0%
73%
20%
15
flagNorway
7%
14%
71%
7%
14
flagMalaysia
20%
13%
66%
0%
15
flagPakistan
17%
11%
64%
5%
17
flagItaly
7%
28%
64%
0%
14
flagGermany
11%
23%
59%
3%
76
flagPoland
13%
20%
58%
6%
4951
flagAustralia
35%
5%
58%
0%
17
flagthe United Kingdom
12%
23%
53%
9%
234
flagFinland
15%
30%
53%
0%
13
flagthe United States
19%
28%
45%
6%
265
flagthe Philippines
25%
12%
43%
12%
16
flagCanada
27%
30%
36%
6%
33
flagFrance
27%
27%
36%
9%
11
flagthe Netherlands
12%
37%
31%
18%
16
flagRepublic of Ireland
25%
25%
31%
18%
16

Gender

men56%
women57%
one
16%
13%
two
20%
21%
three
56%
57%
four
6%
7%

Details

Author: Paweł Kołodziejczyk
Illustration: frankieleon
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