which characteristic of potassium makes it useful for dating rocks?\nit has a long half - life.\nit decays…

which characteristic of potassium makes it useful for dating rocks?\nit has a long half - life.\nit decays at an unknown rate.\nit produces lead as it breaks down.\nit can be used to date all types of rock.

which characteristic of potassium makes it useful for dating rocks?\nit has a long half - life.\nit decays at an unknown rate.\nit produces lead as it breaks down.\nit can be used to date all types of rock.

Answer

Brief Explanations:

Potassium - argon dating is a common radiometric dating method. Potassium - 40 has a long half - life of about 1.25 billion years, which allows it to be used for dating old rocks. The decay rate of potassium - 40 is well - known. It decays to argon - 40 and calcium - 40, not lead. Also, it is mainly used for igneous and metamorphic rocks, not all types of rocks.

Answer:

It has a long half - life.