Input these values into our half-life calculator. T 12 the half-life of the decaying quantity. This equation is used in the calculator when solving for half-life time.
Measure how long it took for that amount of material to decay.
N 0 the initial quantity of the substance that will decay. This is exactly the type of relationship we want to describe half-life. The half-life of a substance is the amount of time it takes for half of the substance to decay. This chemistry video tutorial shows explains how to solve common half life radioactive decay problems.