Question

What is the difference between a stable isotope and radioactive isotopes?

A. Radioactive isotopes last longer

B. Stable Isotopes are shorter

C. There is no difference

D. Radioactive isotopes last for less time

Answer 1

An isotope is a variation of the same element with a different number of neutrons in their nucleus. Isotopes can be classified as either stable or unstable. An unstable isotope undergoes radioactive decay meaning it looses energy over time while emitting radiation.

Answer 2

Answer: The correct answer is Option D.

Explanation:

Isotopes are defined as the chemical species which have same atomic number but differ in mass number.

Stable isotopes are defined as isotopes which does not undergo decay process. They have more half life. They are known as non-radioactive isotopes.

Radioactive isotopes are defined as the isotopes which undergo decay processes very easily. They have very short half life. They are usually the isotopes of heavier elements.

Hence, the correct answer is Option D.