Question

Use the Lewis structure to predict the molecular geometry of each molecule.

mc001-1.jpg

bent

linear

tetrahedral

Answer 1

I don't see the Lewis-structure image — could you re-upload it or list the molecules? Meanwhile, here is how to determine geometry from a Lewis structure and the answers for three common examples:

How to predict geometry (VSEPR, brief):
- Draw the Lewis structure for the central atom.
- Count electron domains around the central atom = number of bonding pairs (single/double/triple count as one domain each) + lone pairs.
- Use the domain count to get the electron-domain geometry, then adjust for lone pairs to get the molecular geometry.

Common domain → molecular geometry:
- 2 domains → linear
- 3 domains: 0 lone pairs → trigonal planar; 1 lone pair → bent
- 4 domains: 0 lone pairs → tetrahedral; 1 lone pair → trigonal pyramidal; 2 lone pairs → bent

Examples:
- CO2: central C has 2 bonding domains (two double bonds), no lone pairs → linear.
- H2O: central O has 4 domains (2 bonding, 2 lone pairs) → bent.
- CH4: central C has 4 bonding domains, no lone pairs → tetrahedral.

If you upload the actual Lewis structures (or name the molecules in the image), I’ll label each one specifically.