Chem Molecular Geometry with VSEPR v2

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

Back

Tetrahedral.

Front

What is the bond angle in a trigonal planar molecule?

Back

120 degrees.

Front

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

Back

Bent.

Front

How does the presence of lone pairs affect molecular geometry?

Back

Lone pairs repel more strongly than bonding pairs, which can alter the bond angles and overall shape of the molecule.

Front

What is the molecular shape of CO2?

Back

Linear.

Front

What is the difference between polar and non-polar molecules?

Back

Polar molecules have an uneven distribution of electron density, leading to a dipole moment, while non-polar molecules have an even distribution of electron density.

Front

What is the molecular shape of NH3?

Back

Trigonal pyramidal.

Front

How many unshared pairs of electrons does a linear molecule have?

Back

0.

Front

What is the bond angle in a tetrahedral molecule?

Back

109.5 degrees.