MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryp-Block (group 13 and 14)Boron and Its Compounds
Boric acid has a polymeric layer structure in which planar BO₃ units are joined by
A.covalent bonds
B.two centre - two electron bonds
C.coordinate bonds✓ Correct
D.hydrogen bonds.
Explanation
49. (S) Orthoboric acid behaves as a weak monobasic acid giving H₃O⁺ and (a) [B(OH)₄]+ (b) H₂BO₂ + (c) [B(OH)₄]– (d) H₂BO₂ – 2 3 4 3 4 B OH H O H O B OH + - é ù + ® + ë û
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