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Hydrogen questions

This is a list of recently added questions about hydrogen.
Which of the following is not a hydrogen isotope?
tritium
414
protium
612
iridium
3495
deuterium
814
Protium, deuterium and tritium are hydrogen isotope varieties. Iridium is a chemical element.
 globalquiz.org
0
Correct this question
2
Very interesting!
Isotopes questions
How many hydrogen isotopes occur naturally on the Earth?
one
2936
two
4849
three
10396
four
1344
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.
 Paweł Kołodziejczyk
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wikipedia → Category:Isotopes of hydrogen
3
Very interesting!
Elements questions
Which of the hydrogen isotopes is radioactive?
Protium
1551
Deuterium
4760
Tritium
8682
None
4901
The two lightest isotopes of hydrogen are stable (protium and deuterium). The tritium is radioactive and unstable, with a half-life of 12.32 years. It is the only radioactive isotope of hydrogen which naturally occurs on Earth (although it is extremely rare).
 Paweł Kołodziejczyk
0
Correct this question
wikipedia → Tritium
3
Very interesting!
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