Problem: Ammonia reacts with boron trifluoride to form a stable compound.Draw the Lewis structure of the ammonia-boron trifluoride reaction product.

FREE Expert Solution

We’re being asked to draw the Lewis structure of the ammonia-boron trifluoride reaction product.


We know that Ammonia, NH3 reacts with boron trifluoride, BF3 to form a stable compound.

**Recall rules for naming covalent compounds:

  • ammonia is the common name for NH3
  • boron trifluoride: BF3
    • Boron = B (refer to periodic table) 
    • trifluoride = F for fluorine (changed ending to ide)
      • tri = prefix corresponding to 3 which denotes subscript of F


This type of reaction occurs between a Lewis acid and a Lewis base to form a Lewis acid-base adduct or complex.


Let’s first define a Lewis acid and a Lewis base.


Based on the Lewis definition:


Lewis acid is an electron pair acceptor.


Some characteristics of a Lewis acid:

When hydrogen is connected to an electronegative element such as P, O, N, S or halogens

▪ hydrogen gains a partially positive charge → makes hydrogen act as a Lewis acid

Positively charged metal ions

View Complete Written Solution
Problem Details

Ammonia reacts with boron trifluoride to form a stable compound.

Draw the Lewis structure of the ammonia-boron trifluoride reaction product.

Frequently Asked Questions

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 Dot Structure concept. You can view video lessons to learn Lewis Dot Structure. Or if you need more Lewis Dot Structure practice, you can also practice Lewis Dot Structure practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Becvar's class at UTEP.