Note : In the following questions a statement of Assertion (A) fo… - Vidyadip

MCQ

Note : In the following questions a statement of Assertion $(A)$ followed by a statement of Reason $(R)$ is given. Choose the correct option out of the choices given below each 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.

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

✓

Answer

Correct option: A.

Both $A$ and $R$ are true but $R$ is not the correct explanation of $A.$

All isotopes of an element have same number of electrons and same electronic configuration; hence their chemical properties are also same.

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