Vespr theory

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 the molecular shape of a molecule with 2 bonding pairs and 0 lone pairs?

Back

Linear shape.

Front

What is the molecular shape of a molecule with 3 bonding pairs and 0 lone pairs?

Back

Trigonal planar shape.

Front

What is the molecular shape of a molecule with 4 bonding pairs and 0 lone pairs?

Back

Tetrahedral shape.

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 types of atoms typically form covalent bonds?

Back

Covalent bonds are typically formed between two nonmetals.

Front

Which molecule has a linear shape?

Back

O2 (oxygen gas) has a linear shape.

Front

Which molecule has a trigonal planar shape?

Back

BF3 (boron trifluoride) has a trigonal planar shape.