Question

Which isotope is appropriate for dating rocks that are billions of years old?


a. carbon-14


b. carbon-12


c. oxygen-16


d. uranium-238

Answer 1

Answer:

D. Uranium-238

Explanation:

Explanation: Uranium- 238 is an unstable isotope of uranium. It is one of the most effective isotope used for radioactive dating in order to determine the age of a rock that is about billions of years old.

Answer 2

Answer:

D.) Uranium-238

Explanation:

It's one of the most effective isotope used for radioactive dating in order to determine the age of a rock that is about billions of years old.

(Also took the test)