Problem: Which of the following ions or molecules can be classified as a Lewis base?A. CN-B. H2OC. NH3D. all of the aboveE. none of the above

FREE Expert Solution

We’re being asked to identify the ions or molecules that can be classified as a Lewis base.


Based on the Lewis definition, a Lewis base is an electron-pair donor.

Some characteristics of a Lewis base:

Compounds that have lone pair(s) on a central element can act as Lewis bases.
Compounds that possess a negative charge can act as Lewis Bases. 


Let’s analyze each species and draw the Lewis structure of the given compound and check which of them can act as a Lewis base.

Step 1Determine the central atom in this molecule.
Step 2: Calculate the total number of valence electrons present.   
Step 3Draw the Lewis Structure for the molecule.

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Problem Details

Which of the following ions or molecules can be classified as a Lewis base?

A. CN-

B. H2O

C. NH3

D. all of the above

E. none of the above

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Lewis Acid and Base concept. You can view video lessons to learn Lewis Acid and Base. Or if you need more Lewis Acid and Base practice, you can also practice Lewis Acid and Base practice problems.