Question

1. What is a half-life?

Answer 1

Half-life, in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive ..!!

Hopefully u will satisfy with my answer..!!

Please Mark on brainleast please..!!