Start Half life radiometric dating element

Half life radiometric dating element

The half life of potassium 40 is 1.3 billion years.

Radioactivity and radioactive decay are spontaneous processes.

Students often struggle with this concept; therefore, it should be stressed that it is impossible to know exactly when each of the radioactive elements in a rock will decay.

Many rocks and organisms contain radioactive isotopes, such as U-235 and C-14.