Answer to Question #153916 in Inorganic Chemistry for Hasnain naqvi

Question #153916

B(OH)3 is acidic while Al(OH)3 is amphoteric in nature


1
Expert's answer
2021-01-06T05:55:38-0500

In Boron 2p orbitals are involved

Whereas Al uses 3p orbitals due which the Al-O bonds are longer and less effective overlap. Where as B-O bonds are small and more effective overlap. Boron hydroxide does not donate proton but rather accepts hydroxide ion. 

It cannot accept protons like Aluminum hydroxide, so it is only acidic.


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