Which statement about radioisotopes is FALSE?
A) Potassium-40 has an extremely long half-life.
B) Carbon-14 is typically used to date sedimentary rock.
C) The ratio of carbon-14 to carbon-12 is used in dating fossils.
D) The half-life of a radioisotope does not vary with temperature or pressure.
E) The nucleus of a radioisotope can change into that of a different element during decay.

Question

Quizplus · Accepted Answer

Carbon-14 is not typically used to date sedimentary rock; instead, it is used to date organic materials. Sedimentary rocks are usually dated using other methods, such as uranium-lead dating.

Which Statement About Radioisotopes Is FALSE