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 is a lone pair of electrons?

Back

A lone pair is a pair of non-bonding electrons that are localized on a single atom, typically the central atom in a molecule.

Front

How does a lone pair affect molecular shape?

Back

Lone pairs repel more strongly than bonding pairs, which can alter the geometry of the molecule, leading to shapes like bent or pyramidal.

Front

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

Back

The molecular shape is trigonal pyramidal.

Front

How many total electron pairs are in a tetrahedral molecule?

Back

There are four total electron pairs in a tetrahedral molecule.

Front

What is the bond angle in a tetrahedral molecular geometry?

Back

The bond angle in a tetrahedral molecular geometry is approximately 109.5 degrees.

Front

What is the difference between bonding pairs and lone pairs?

Back

Bonding pairs are shared between atoms to form bonds, while lone pairs are not involved in bonding and are localized on a single atom.

Front

What molecular shape is formed when there are two bonding pairs and two lone pairs?

Back

The molecular shape is bent.

Front

How many bonds are formed in a carbon dioxide (CO2) molecule?

Back

In a carbon dioxide (CO2) molecule, there are two double bonds between carbon and each oxygen.

Front

What is the effect of unshared pairs of electrons on molecular geometry?

Back

Unshared pairs of electrons can distort the shape of a molecule, leading to variations like bent or pyramidal shapes.