Molecular Geometries and Examples

Flashcards covering different molecular geometries and examples based on electron groups and bond angles.

What is the bond angle in a linear geometry?

180°

Give an example of a molecule with a linear geometry.

BeCl2

What is the bond angle in a trigonal planar geometry?

120°

Name a molecule that exhibits trigonal planar geometry.

BF3

What causes a bent (angular) molecular shape?

Two bonding pairs and one or two lone pairs on the central atom.

What is the approximate bond angle in a bent (angular) molecule?

Less than 120°

Provide examples of bent (angular) molecules.

SO2, H2O

What is the bond angle in a tetrahedral geometry?

109.5°

Give an example of a molecule with tetrahedral geometry.

CH4

What causes a trigonal pyramidal shape?

Three bonding pairs and one lone pair on the central atom.

What is the approximate bond angle in a trigonal pyramidal molecule?

Less than 109.5°

Name a molecule that exhibits trigonal pyramidal geometry.

NH3