H3BO3 is

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Question

H3BO3 is

Solution

Correct option is

Monobasic and weak Lewis acid

The boron atom in boric acid, H3BO2 is electron deficient i.e., boric acid is a Lewis acid with one p-orbital vacant. There is no d-orbital of suitable energy in boron atom. So, it can accommodate only one additional electron pair in its outermost shell. 

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