Question

question 1 points 1
what isotope of phosphorous is not radioactive?

phosphorus-32

phosphorus-31

phosphorus-23

phosphorus-13

Explanation:

Phosphorus has several isotopes. Phosphorus - 31 is the only stable (non - radioactive) isotope of phosphorus. Phosphorus - 32 is radioactive, and Phosphorus - 23 and Phosphorus - 13 are also radioactive isotopes.

Answer:

B. Phosphorus - 31