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Physics (AS & A Level) · May / June 2023 · Paper 13 · Question 40

9702Fundamental particles

What is the quark composition of a hydrogen-3 nucleus, ³₁H? | | number of quarks | | |---|---|---| | | up | down | | A | 4 | 5 | | B | 5 | 4 | | C | 5 | 7 | | D | 7 | 5 |

  1. A4 up, 5 down
  2. B5 up, 4 down
  3. C5 up, 7 down
  4. D7 up, 5 down

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Correct answer: A. 4 up, 5 down

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