Question Detail
Question
How many naturally occurring isotopes of hydrogen are mentioned in the text?
Correct Answer
Option C is the correct answer.
Detailed Explanation
The text mentions three naturally occurring isotopes of hydrogen: 'protium, deuterium and tritium (1H1, 2H1 and 3H1).' The accompanying figure also illustrates these three.
Hint
Check the specific examples of hydrogen isotopes provided in the 'Atomic Isotopes' section.