AIIMS 2019 Chemistry Isotopes Assertion Reason Question
The chemical properties of different isotope are same but in isotopes the number of neutrons is different. So, the assertion is true but the reason is false.
Both assertion and reason are true and reason is the correct explanation of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Both assertion and reason are false.
Correct Answer
Detailed Explanation
Option A is correct because the assertion accurately states that isotopes of an element exhibit the same chemical properties due to having the same number of protons, which defines the element, while the reason correctly identifies that isotopes differ in their neutron count. This difference in neutrons affects the isotopes' mass and stability but does not alter their chemical behavior.
Option B is incorrect because the reason does explain the assertion, making it a correct explanation. Option C is wrong as both the assertion and reason are true, and option D is incorrect since the assertion is indeed true. Understanding isotopes is crucial in fields like chemistry and nuclear physics, as it highlights the relationship between atomic structure and chemical properties.
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