HC 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 determines the shape of a molecule according to VSEPR?

Back

The shape of a molecule is determined by the number of bonding pairs and lone pairs of electrons around the central atom, which arrange themselves to minimize repulsion.

Front

What is the molecular shape of CH4 (methane)?

Back

Tetrahedral.

Front

What is the molecular shape of H2O (water)?

Back

Bent.

Front

What is the molecular shape of NH3 (ammonia)?

Back

Trigonal pyramidal.

Front

What is the molecular shape of CO2 (carbon dioxide)?

Back

Linear.

Front

How many electron pairs are around the central atom in a tetrahedral molecule?

Back

Four electron pairs.

Front

What is the bond angle in a tetrahedral molecule?

Back

Approximately 109.5 degrees.

Front

What is the bond angle in a trigonal planar molecule?

Back

Approximately 120 degrees.

Front

What is the bond angle in a bent molecule?

Back

Less than 120 degrees.