Question

The element carbon-14 can change to nitrogen 14 by losing two

neutrons. ________
O the most common isotope
O an isotope of nitrogen
O a stable isotope
O a radioactive isotope

Answer 1

Carbon-14 is a radioactive isotope because it undergoes a change in its atomic nucleus, losing two neutrons to become nitrogen-14. Radioactive isotopes are unstable and tend to decay over time, emitting particles and radiation.

Answer is: a radioactive isotope