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
9%
0%
76%
14%
21
flagIndia
7%
14%
72%
4%
154
flagNorway
5%
16%
72%
5%
18
flagUU
16%
12%
70%
0%
24
flagPakistan
15%
10%
70%
5%
20
flagMalaysia
20%
13%
66%
0%
15
flagItaly
7%
28%
64%
0%
14
flagSingapore
20%
20%
60%
0%
10
flagPoland
13%
20%
58%
6%
5479
flagAustralia
35%
5%
58%
0%
17
flagGermany
11%
26%
57%
3%
80
flagthe United Kingdom
13%
23%
53%
9%
246
flagFrance
20%
20%
53%
6%
15
flagFinland
14%
35%
50%
0%
14
flagthe United States
18%
28%
46%
6%
291
flagthe Philippines
25%
12%
43%
12%
16
flagCanada
25%
31%
37%
5%
35
flagRepublic of Ireland
21%
26%
31%
21%
19
flagthe Netherlands
16%
44%
24%
16%
25

Gender

men57%
women57%
one
15%
13%
two
20%
21%
three
57%
58%
four
6%
6%

Details

Author: Paweł Kołodziejczyk
Illustration: frankieleon
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