Question

The decay constant of a radioactive substance is lambda

Answer 1

Explanation:

The decay rate of a radioactive substance is characterized by the following constant quantities: ... The mean lifetime (τ, “tau”) is the average lifetime of a radioactive particle before decay. The decay constant (λ, “lambda”) is the inverse of the mean lifetime.

This process is called radioactivity or radioactive decay. ... It is the time it takes for half of the amount of the nuclei in a sample to decay. The half-life is related to the decay constant lambda, which has a value dependent on the sample's material. The formula is t(half) = ln 2 / lambda = 0.693 / lambda