Question

What is Half-Life radioactivity​

Answer 1

Answer:

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 material to decrease by one-half.

Answer 2

Answer:

The half-life period of a radioactive substance is defined as the time in which one-half of the radioactive substance is disintegrated.