VSEPR Review

Front

What is VSEPR theory?

Back

VSEPR (Valence Shell Electron Pair Repulsion) theory is a model used to predict the geometry of individual molecules based on the repulsion between electron pairs in the valence shell of the central atom.

Front

What molecular shape does CS₂ have?

Back

Linear.

Front

Define a lone pair in the context of VSEPR theory.

Back

A lone pair is a pair of non-bonding electrons located on the central atom of a molecule.

Front

Which molecular shape has an unshared pair of electrons on the central atom?

Back

Trigonal pyramidal.

Front

What is the molecular shape of SO₃?

Back

Trigonal planar.

Front

According to VSEPR theory, how do atoms and unshared pairs orient themselves?

Back

They orient themselves so that they are as far apart as possible.

Front

What is the molecular shape of a molecule with four bonding pairs and no lone pairs?

Back

Tetrahedral.

Front

What is the bond angle in a trigonal planar molecule?

Back

120 degrees.

Front

What is the bond angle in a tetrahedral molecule?

Back

109.5 degrees.

Front

What shape does a molecule with two bonding pairs and one lone pair have?

Back

Bent.