Why does B3+ ion not exist
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Secondary School Chemistry 5 points
Boron does not form B3+ ion why
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adityapm
adityapm Ambitious
Boron can form B3+ ion
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Chirpy Ace
As the Boron atom is small in size a large amount of energy is needed to remove 3 electrons from the boron atom. So Boron does not form B3+ ion.
The atomic number of Boron is 5. Its electronic configuration is 1s[2]2s[2]2p[1].
When one electron is removed from the p orbital a He-like fulfilled s orbital is left. This is highly stable. So the second ionization enthalpy is quite high.
Again when one electron is removed a half filled orbital is left. So the third ionization enthalpy is also quite high.
Since the total energy needed to make B3+ is the total of all the ionization enthalpies an enormous amount of energy is required to form it.