Problem: How would we modify the figure if we were looking at PH3 rather than NH3?

FREE Expert Solution

We are asked how would we modify the figure if we were looking at PH3 rather than NH3.


Compare the molecules: 

  • We can observe that we both have 3 H on each molecule. 
  • If we look at the periodic table, we can see that P and N are both on group 5A.


View Complete Written Solution
Problem Details

How would we modify the figure if we were looking at PH3 rather than NH3?

1) Draw the Lewis structure. A central N is single bonded left, right, and below to H, and has a single pair of dots above. 2) Determine electron-domain geometry about the central atom from VSEPR model and Table 9.1. A pyramid is drawn, with N at the center. The lone pair of dots is the top point above N, and the three points below N are the three Hs. One is bonded in the plane of the page , one is into the page, and one is out of the page. 3) Using Table 9.4, select sp3 hybrid orbital set. sp3 hybrid orbitals on N overlap with 1s orbitals on three hydrogens to make three N-H bonds. A model of hybrid orbitals shows a central N atom single bonded to three hydrogens, each angled down, and a nonbonding pair above.


Learn this topic by watchingMolecular vs Electron Geometry Concept Videos
All Chemistry Practice Problems Molecular vs Electron Geometry Practice Problems
Q.If you react BF3 to make the ion BF32-, is this ion planar?
Q.Which of these molecular shapes do you expect for the SF6 molecule?
Q.Consider an AB3 molecule in which A and B differ in electronegativity. You are told that the molecule has an overall dipole moment of zero. Which of t...
Q.A certain AB4 molecule has a square-planar molecular geometry. Which of the following statements about the molecule is or are true?The molecule has fo...
See all problems in Molecular vs Electron Geometry

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 Molecular vs Electron Geometry concept. You can view video lessons to learn Molecular vs Electron Geometry. Or if you need more Molecular vs Electron Geometry practice, you can also practice Molecular vs Electron Geometry practice problems.