3.2: Shape of Molecules

Question 1

Explain the VSEPR

Answer 1

The Valence Shell Electron Pair Repulsion Theory provides a way to predict molecular shape according to repulsion of electron pairs.

Question 2

When does a trigonal pyramidal shape occur?

Answer 2

Central atom
- has 5 valence electrons
- can form 3 single bonds with other atoms
- 1 lone pair

Question 3

What is a trigonal planar?

Answer 3

2 single bonds, 1 double (methanal)