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Assertion: Of the elements , helium has the highest value of first ionisation enthalpy. Reason : Helium has the most positive electron gain enthalpy of all the elements.A. If both assertion and reason are true and reason is the correct explanation of assertionB. If the assertion and reason are true but reason is not the correct explanation of assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true.

Answer» Correct Answer - C
Correct Reason: Helium is the smallest insert gas.


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