AIIMS 2001 Chemistry Ionization Energy Assertion Reason Question
Assertion: Ionisation potential of B (atomic no.4) is less than Be (atomic no. 5).
Reason: The first electron released from Be is of p-orbital but that from B is of s-orbital.
If both A and R are true and R is the correct explanation of A.
If both A and R are true but R is not the correct explanation of A.
If A is true but R is false.
If A is false but R is true.
Correct Answer
Detailed Explanation
The ionization potential of B is less than Be because the electron removed from B is from a higher energy p-orbital, not because of the reason given.
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