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
flagthe United Arab Emirates
6%
3%
80%
9%
31
flagPakistan
13%
8%
73%
4%
23
flagIndia
7%
14%
71%
4%
185
flagNorway
10%
15%
70%
5%
20
flagMalaysia
20%
13%
66%
0%
15
flagItaly
5%
29%
64%
0%
17
flagGermany
9%
24%
61%
3%
111
flagPoland
13%
20%
59%
6%
6435
flagUnknown
16%
20%
59%
1%
62
flagFrance
19%
19%
57%
4%
21
flagFinland
16%
27%
55%
0%
18
flagthe United Kingdom
12%
23%
53%
10%
300
flagthe Philippines
22%
11%
50%
11%
18
flagthe United States
16%
26%
49%
6%
342
flagAustralia
28%
14%
47%
9%
21
flagCzech Republic
0%
54%
45%
0%
11
flagCanada
27%
30%
36%
5%
36
flagthe Netherlands
12%
42%
33%
12%
33
flagUkraine
7%
53%
30%
7%
13
flagRepublic of Ireland
25%
29%
29%
16%
24

Gender

men57%
women58%
one
15%
13%
two
21%
21%
three
57%
59%
four
6%
6%

Details

Author: Paweł Kołodziejczyk
Illustration: frankieleon
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