Single Choice

Which of these is least likely to act as a Lewis base?

A$$CO$$
B$$F^{-}$$
C$$BF_{3}$$
Correct Answer
D$$PF_{3}$$

Solution

$$CO$$, $$F^{-}$$and $$PF_{3}$$ can either donate a lone pair of electron or pi electrons. Hence, they act as Lewis bases.

On the other hand, $$BF_{3}$$ has vacant orbital in which it can accent a lone pair of electrons or pi electrons. Hence, it acts as a Lewis acid. Thus, it has least tendency to act as a Lewis base.

SIMILAR QUESTIONS

Acids, Bases and Salts

Which one of the following is not a base?

Acids, Bases and Salts

The gaseous phase neutralisation reaction can be explained only on the basis of:

Acids, Bases and Salts

Which one of the following is not a Lewis Acid?

Acids, Bases and Salts

Identify the incorrect statement out of the following :

Acids, Bases and Salts

According to the Lewis acid-base concept:

Acids, Bases and Salts

Which of the following is a Lewis acid?

Acids, Bases and Salts

Which of the following fluoro-compounds is most likely to behave as a Lewis base?

Acids, Bases and Salts

Classify the following species into Lewis acids and Lewis bases and show how these act as Lewis acid/base: (a) $$\displaystyle { OH }^{ - }$$ (b) $$\displaystyle { F }^{ - }$$ (c) $$\displaystyle { H }^{ + }$$ (d) $$\displaystyle { BCl }_{ 3 }$$.

Acids, Bases and Salts

Why does boron triflouride behave as a Lewis acid ?

Acids, Bases and Salts

According to Lewis concept, an acid is a/an:

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