NEET Chemistry Ionization Energy MCQ Question
Beryllium has higher ionisation enthalpy than boron. This can be explained as,
beryllium has higher size than boron hence its ionisation enthalpy is higher
penetration of 2p-electrons to the nucleus is more than the 2s-electrons
it is easier to remove electron from 2p-orbital as compared to 2s-orbital due to more penetration of s-electrons
ionisation energy increases in a period.
Correct Answer
Detailed Explanation
Beryllium has a filled 2s subshell, making it more stable and harder to ionize compared to boron, which has a 2p electron.
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