1.9 VSEPR

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 molecular shape does NH3 (ammonia) have?

Back

Trigonal pyramidal.

Front

Which molecular shape has a bond angle of 120 degrees?

Back

Trigonal planar.

Front

What is the bond angle in a tetrahedral molecular shape?

Back

109.5 degrees.

Front

Which molecule has a linear shape?

Back

CO2 (carbon dioxide).

Front

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

Back

Bent.

Front

What is the significance of lone pairs in molecular geometry?

Back

Lone pairs occupy space and can affect the bond angles and overall shape of the molecule.

Front

What is the bond angle in a linear molecular shape?

Back

180 degrees.

Front

How does VSEPR theory help in predicting molecular shapes?

Back

It helps by considering the repulsion between electron pairs, which determines the arrangement of atoms in space.

Front

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

Back

Tetrahedral.