Molecular Structure (VSPER)

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 the electron pairs in the valence shell of the central atom.

Front

What determines the shape of a molecule according to VSEPR theory?

Back

The shape of a molecule is determined by the number of bonding pairs and lone pairs of electrons around the central atom.

Front

What is a lone pair of electrons?

Back

A lone pair of electrons is a pair of valence electrons that are not shared with another atom and are located on the central atom.

Front

What is the bond angle in a linear molecular geometry?

Back

The bond angle in a linear molecular geometry is 180°.

Front

What is the bond angle in a trigonal planar molecular geometry?

Back

The bond angle in a trigonal planar molecular geometry is 120°.

Front

What is the bond angle in a tetrahedral molecular geometry?

Back

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

Front

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

Back

The bond angles in a trigonal bipyramidal molecular geometry are 90° and 120°.

Front

What is the bond angle in an octahedral molecular geometry?

Back

The bond angle in an octahedral molecular geometry is 90°.

Front

How does the presence of lone pairs affect bond angles?

Back

The presence of lone pairs can reduce the bond angles between bonding pairs due to increased repulsion from the lone pairs.

Front

What is the molecular shape of a molecule with 2 bonding pairs and 1 lone pair?

Back

The molecular shape is bent or angular.