Assertion(A): All isotopes of a given element show the same type of chemical behaviour.
Reason(R) The chemical properties of an atom are controlled by the numb er of electron s in the atom.

Options

A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. Both A and R are false.

Explanation

Both assertion and reason are true and reason is the correct explanantion of assertion. Isotopes have the saem atomic number i.e. same number of electrons which are responsible for their chemical behaviour.
Hence, these exhibit smililar chemical properties.