Question

Which information can be determined using half-life?

age of material
type of particle released
percentage of rock that has aged
number of radioactive particles left

Answer 1

In radioactive decay, the half-life is the length of time after which there is a 50% chance that an atom will have undergone nuclear decay. It varies depending on the atom type and isotope, and is usually determined experimentally.
hope it will help you

Answer 2

as of metrical type of particle release percentage of rock that as number of radioactive particles left