Assertion (A): All isotopes of a given element

Question:

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

number of electrons in the atom.

(i) Both A and R are true and R is the correct explanation of A.

(ii) Both A and R are true but R is not the correct explanation of A.

(iii) A is true but R is false.

(iv) Both A and R are false.

Solution:

Option (i) Both A and R are true and R is the correct explanation of A is correct

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