what would the half life be quizlet
For example, carbon has two isotopes, C-12 and C-14. Both have the same atomic number of 6, but have different numbers of neutrons. C-14 has two extra neutrons, is radioactive and undergoes radioactive decay. Half-life is the amount of time required for half of a quantity of a radioactive element to decay. Carbon-14 has a half-life of 5730 years. That is, if you take one gram of C-14, half of it will decay in 5730 years.