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%
9%
81%
9%
11
flagthe United Arab Emirates
8%
4%
76%
12%
25
flagIndia
6%
13%
73%
4%
174
flagPakistan
14%
9%
71%
4%
21
flagNorway
10%
15%
70%
5%
20
flagMalaysia
20%
13%
66%
0%
15
flagItaly
6%
26%
66%
0%
15
flagUnknown
10%
24%
61%
2%
49
flagFrance
15%
20%
60%
5%
20
flagSingapore
20%
20%
60%
0%
10
flagPoland
13%
20%
59%
6%
5937
flagGermany
10%
26%
58%
4%
99
flagFinland
16%
27%
55%
0%
18
flagthe United Kingdom
12%
23%
53%
10%
280
flagAustralia
31%
10%
52%
5%
19
flagthe Philippines
22%
11%
50%
11%
18
flagthe United States
18%
27%
48%
5%
308
flagCanada
27%
30%
36%
5%
36
flagthe Netherlands
13%
37%
34%
13%
29
flagRepublic of Ireland
20%
30%
30%
20%
20

Gender

men56%
women58%
one
15%
13%
two
21%
21%
three
56%
58%
four
6%
6%

Details

Author: Paweł Kołodziejczyk
Illustration: frankieleon
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