What percentage of a radioactive isotope remains after 4 half-lives?

6.25%
66.7%
6.67%
62.5%

What is an example of a physical property?

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?

Carbon-14 undergoes radioactive decay in the reaction above. determine the type of radiation emitted in this reaction and describe what is happening to the nucleus during this reaction.