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CGP EDU Academic Team
Published on: August 13, 2026
The states of hybridization of boron and oxygen atoms in boric acid (H 3 BO 3 ) are respectively :
Text Solution
Verified by ExpertsThe correct answer is:
A
For planar BO 3 groups, the B–O bond length is usually close to 1.36 Å but for tetrahedral BO 4 groups the length increases to about 1.48 Å. This suggests that in the planar grouping π -bonding involving lone pairs of electrons from the oxygen atoms occurs; this π -bonding is necessarily lost in the tetrahedral group, in which a lone pair from the extra oxygen atom occupies the previously empty orbital on the boron atom.
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