Molecular Geometry

Front

According to the octet rule, most elements need _______ valence electrons.

Back

8

Front

What is the shape of H₂O?

Back

Bent

Front

What is the molecular geometry of a molecule with 3 bonded pairs and no lone pairs?

Back

Trigonal planar

Front

What is the molecular geometry of an expanded molecule with 4 bonded pairs and 2 lone pairs?

Back

Square planar

Front

SiCl₄ has what shape?

Back

Tetrahedral

Front

Define molecular geometry.

Back

The three-dimensional arrangement of atoms in a molecule.

Front

What is the VSEPR theory?

Back

Valence Shell Electron Pair Repulsion theory; it predicts the shape of molecules based on electron pair repulsion.

Front

What is a lone pair of electrons?

Back

A pair of valence electrons that are not shared with another atom.

Front

What is the shape of a molecule with 4 bonded pairs and 1 lone pair?

Back

Trigonal pyramidal

Front

What is the bond angle in a tetrahedral molecule?

Back

Approximately 109.5 degrees.