VSEPR Shapes and Names

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 formed when there are 5 bonding pairs and 1 lone pair of electrons?

Back

Square pyramid.

Front

What molecular shape is formed when there are 6 bonding pairs and no lone pairs of electrons?

Back

Octahedral.

Front

What molecular shape is formed when there are 4 bonding pairs and 2 lone pairs of electrons?

Back

Square planar.

Front

What molecular shape is formed when there are 2 bonding pairs and 1 lone pair of electrons?

Back

Bent.

Front

What molecular shape is formed when there are 4 bonding pairs and 1 lone pair of electrons?

Back

Seesaw or sawhorse.

Front

How does the presence of lone pairs affect molecular geometry?

Back

Lone pairs occupy more space than bonding pairs, causing bond angles to decrease.

Front

What is the bond angle in a tetrahedral molecular shape?

Back

Approximately 109.5 degrees.

Front

What is the bond angle in a trigonal bipyramidal molecular shape?

Back

120 degrees and 90 degrees.