• Sep 21, 2025 phet simulations radioactive dating game answers e the isotope quantities over time. Use the decay formula: Age = (ln(N₀/N)) / λ where N₀ is the original isotope quantity, N is the remaining quantity, and λ is the decay constant. Remember that each isotope has a known half-life, which can be used to calculate λ: λ By Jaquelin Jacobs
