MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryIonic equilibriumPrevious Year Questions

Which of the following fluoro-compounds is most likely to behave as a Lewis’s base? (NEET-II 2016)

A.BF3

B.PF3✓ Correct

C.CF4

D.SiF4

Explanation

PF3 is a Lewis’s base due to the presence of lone pair of electrons. BF3 is Lewis’s acid while CF4 and SiF4 are electron precise molecules.

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