Question

Half - life is

Your answer:

the combining of 2 small atoms to form 1 larger atom


the amount of time it takes for approximately 50% of a radioactive atom sample to undergo nuclear decay


the amount of energy it takes to increase a sample of radioactive atoms by 50%.


the amount of time it takes for a sample of radioactive atoms to increase 50%

Answer 1

the amount of time it takes for approximately 50% of a radioactive atom sample to undergo nuclear decay