Question

Which is the FALSE statement about C-14?

A.
It is a stable isotope.


B.
It is a radioactive isotope.


C.
It is present in all living things.


D.
It is used to calculate the age of remains.

Answer 1

Answer : The false statement is, (A) It is a stable isotope.

Step-by-step explanation:

Isotope : It is defined as the element that have the same number of protons but have the different number of neutrons of each of the atom.

Carbon has three isotopes which are carbon-12, carbon-13 and carbon-14.

Carbon-14 is an unstable isotope which is radioactive isotope and it is present in all the living things.

Carbon-14 is used to calculate the age of of remains.

Hence, the false statement is, (A) It is a stable isotope.

Answer 2

The answer is: A

C-14 is not stable and this is the reason why it goes through radioactive decay.