Physics (AS & A Level) · May / June 2024 · Paper 11 · Question 37
9702Atoms, nuclei and radiation
Hydrogen and deuterium can be represented by the nuclide symbols $^{1}_{1}\text{H}$ and $^{2}_{1}\text{H}$ respectively. What is a difference between hydrogen and deuterium?
- AThe deuterium atom has twice the number of electrons as the hydrogen atom.
- BThe deuterium nucleus has a charge, but the hydrogen nucleus has no charge.
- CThe deuterium nucleus has less mass than the hydrogen nucleus.
- DThe deuterium nucleus has half the charge per unit mass of the hydrogen nucleus.
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Correct answer: D. The deuterium nucleus has half the charge per unit mass of the hydrogen nucleus.
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