O-LevelPhysicsNuclear Physics5054/11 · Oct/Nov 2014 · Q391 Mark
A sample of wood contains 9.0 × 10¹⁶ nuclei of carbon-14. The nuclei undergo radioactive decay with a half-life of 5600 years. How many carbon-14 nuclei remain in this sample after 16800 years?
A1.1 x 10²
B1.1 x 10¹⁶
C3.0 x 10¹⁶
D4.5 x 10¹⁶
✓ Correct answer
B: 1.1 x 10¹⁶
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