Question

Which statements best describe half-lives of radioactive isotopes? Check all that apply.

Answer 1

Answer: The half-life varies depending on the isotope.  Half-lives range from fractions of a second to billions of years.   The half-life of a particular isotope is constant.  

Explanation: On Edgenuity!!!!

Answer 2

Answer:

The half-life varies depending on the isotope.

Half-lives range from fractions of a second to billions of years.

The half-life of a particular isotope is constant.