BRAINCAKERadioactive Decay and Half-life
Whe a substance decays, the mass of the initial isotope decreases exponentially as it is replaced by the new element. At any one instant, the mass M of isotope left is given by
M = M0e-λt
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Key terms in this lesson
- isotope
- An atom of the same element, with the same number of protons but a different number of neutrons.
More in Radioactivity
- Gamma radiation
- Radioactive Change
- The Dangers of Radioactivity
- Background Radiation
- Activity
- Radioactive Decay
- Decay Constant
- Radiocarbon dating
All 25 lessons in Radioactivity · All OCR A-level Physics topics