AIIMS 2010 Chemistry Ionisation Energy Assertion Reason Question
Assertion: Helium has the highest value of ionisation energy among all the elements known. Reason: Helium has the highest value of electron affinity among all the elements known.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
It contains fully filled 1s2 orbital which has more penetrating effect and is very close to the nucleus and hence has higher value of ionisation energy.
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