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the ionization energy of boron is less than beryllium. why?

Asked by v raja 31st May 2012, 9:20 PM
Answered by Expert
The most easily removed electron in Boron is that in the 2p orbital, higher in energy than the 2s electrons in Beryllium. It therefore needs less energy for total removal than does the 2s electron of Boron. This outweighs the effect of the increased nuclear charge of Boron, which tends to make its outer electron harder to remove.

Answered by Expert 1st June 2012, 9:48 AM
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