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Deuterium makes up what percentage of hydrogen atoms?
A0.025
B0.035
C0.045
D0.015
Answer & Solution
Correct answer: D. 0.015
1. It is a small fraction of the total.
2. Deuterium accounts for 0.015 per cent.
3. So the correct answer is 0.015.
_Source: syllabus Chemistry, Ch 2 'Structure of Atom'_
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