Which of the hydrogen isotopes is radioactive?

Protium
Deuterium
Tritium
None
The two lightest isotopes of hydrogen are stable (protium and the heavy hydrogen (deu­teri­um)). The tritium is ra­dioac­tive and un­sta­ble, with half-life of 12.32 years. It is the only ra­dioca­tive isotope of hydrogen which nat­u­ral­ly occurs on Earth (although it is ex­treme­ly rare).

Answers distribution

Protium
Deuterium
Tritium
None
answers
flagItaly
0%
6%
86%
6%
61
flagFinland
0%
11%
86%
1%
51
flagVietnam
5%
5%
85%
5%
20
flagthe United Arab Emirates
3%
12%
72%
12%
33
flagGermany
4%
13%
68%
13%
188
flagPakistan
4%
12%
64%
20%
25
flagthe United States
8%
16%
60%
13%
364
flagthe United Kingdom
5%
17%
59%
17%
358
flagPoland
6%
18%
57%
17%
8644
flagthe Philippines
14%
19%
57%
9%
21
flagIndia
7%
23%
56%
10%
190
flagNorway
7%
26%
53%
11%
26
flagFrance
10%
16%
51%
21%
37
flagMalaysia
5%
25%
50%
20%
20
flagAustralia
8%
20%
48%
20%
25
flagUnknown
15%
20%
47%
17%
85
flagSpain
23%
17%
47%
11%
17
flagthe Netherlands
20%
25%
40%
14%
35
flagCanada
5%
27%
36%
30%
36
flagRepublic of Ireland
8%
13%
34%
43%
23

Gender

men63%
women56%
Protium
5%
7%
Deuterium
15%
19%
Tritium
63%
56%
None
15%
16%

Language versions

question
answers
results
flag
Which of the hydrogen isotopes is radioactive?
952
53%

Details

Author: Paweł Kołodziejczyk
Illustration: Elliott Brown
tools
Should this question be improved? Improve it.
Globalquiz questions are translated by users for other users. Translate this question.