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

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Both A and R are true and R is the correct explanation of A

A is true but R is false

Both A and R are true and R is NOT the correct explanation of A

Both A and R is false

answer is A.

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Detailed Solution

Isotopes are nuclides of same elements having different marss number and same atomic number.
Nuclides having same number of electrons are having same chemical properties.

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