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MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryp-Block (group 13 and 14)Boron and Its Compounds

Boric acid H₃BO₃ and BF₃ have the same number of elec- trons. The former is a solid and the latter is a gas. The reason is:

A.BF₃ is a Lewis acid while B(OH)₃ is not
B.they have different geometrics
C.In BF₃, F– is smaller in size than OH– in B(OH)₃
D.No molecular association is possible in BF₃ while it✓ Correct
Explanation

Hydrogen bonding in 3 B OH

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