Assertion :Isotopes of a particular element have nearly identical chemical behaviour.
Reason: They have identical electron configuration.

Both assertion and reason are correct and reason is the correct explanation for assertion

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Both assertion and reason are correct but reason is not the correct explanation for assertion

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Assertion is correct but reason is incorrect

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Both assertion and reason are incorrect

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Solution

The correct option is A Both assertion and reason are correct and reason is the correct explanation for assertion
Isotopes have same number of electrons and protons so they have identical electronic configuration and nearly identical chemical behavior.

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