Question

What is a decay constant?

Answer 1

1. Decay constant is also known as disintegration constant.
2. It is the ratio of number of radioactive atoms disintegrating in a short interval of time to the number of atoms of same kind present at the starting.
3. It is represented by the symbol $\lambda$.
4. The unit used for decay constant is $s^{-1}$.
5. It is the reciprocal of decay time.