VSEPR

Front

What does VSEPR stand for?

Back

Valence Shell Electron Pair Repulsion

Front

What is the basic principle of VSEPR theory?

Back

The shape of a molecule is determined by the repulsion between electron pairs in the valence shell of the central atom.

Front

What molecular shape is associated with a molecule that has four bonding pairs and no lone pairs?

Back

Tetrahedral

Front

What is the bond angle in a tetrahedral molecule?

Back

109.5 degrees

Front

What is the molecular shape of a molecule with three bonding pairs and one lone pair?

Back

Trigonal pyramidal

Front

How many total electron pairs are present in a trigonal pyramidal molecule?

Back

Four (three bonding pairs and one lone pair)

Front

What is the molecular shape of a molecule with two bonding pairs and two lone pairs?

Back

Bent or angular

Front

What is the bond angle in a bent molecule with two lone pairs?

Back

Approximately 104.5 degrees

Front

Which molecule has a trigonal planar shape?

Back

BF3 (Boron trifluoride)

Front

What is the bond angle in a trigonal planar molecule?

Back

120 degrees