VSEPR

Front

What does VSEPR stand for?

Back

Valence Shell Electron Pair Repulsion.

Front

What is the basic principle of VSEPR theory?

Back

The shape of a molecule is determined by the repulsion between electron pairs in the valence shell of the central atom.

Front

What is a lone pair in the context of VSEPR theory?

Back

A pair of non-bonding electrons that are localized on a single atom.

Front

How many shared and unshared pairs are present in a bent molecular geometry?

Back

2 shared pairs and 2 unshared pairs.

Front

What is the molecular shape of a molecule with 3 shared pairs and 1 unshared pair?

Back

Pyramidal.

Front

What is the molecular geometry of a molecule with one central atom bonded to two atoms and having two lone pairs?

Back

Bent.

Front

What is the geometry of a molecule with 3 shared pairs and no unshared pairs?

Back

Trigonal planar.

Front

How does the presence of lone pairs affect molecular geometry?

Back

Lone pairs occupy space and repel bonding pairs, altering the angles and shape of the molecule.

Front

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

Back

120 degrees.

Front

What is the bond angle in a pyramidal molecular geometry?

Back

Approximately 107 degrees.