CHEMISTRY CALCULATORS
Radioactive Decay Calculator
Effortlessly calculate radioactive decay and isotope activity for chemistry enthusiasts.
What is the Radioactive Decay Calculator & How does it work?
Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation. The rate of decay is characterized by the half-life, which is the time required for half of a given quantity of a radioactive isotope to decay.
The activity (A) of a radioactive sample is the number of disintegrations per unit time and can be calculated using the formula:The decay constant (λ) is related to the half-life (T1/2) by the equation:
The activity (A) of a radioactive sample is the number of disintegrations per unit time and can be calculated using the formula:
A = \lambda N
A = Activity, λ = Decay constant, N = Number of atoms
\lambda = \frac{\ln(2)}{T_{1/2}}
T1/2 = Half-life
Parameters
Remaining Amount (N)—
Results are for informational purposes only and do not constitute professional advice.