Molecular Polarity and Geometry

Front

What is molecular polarity?

Back

Molecular polarity refers to the distribution of electrical charge over the atoms in a molecule. A molecule is polar if it has a net dipole moment due to the presence of polar bonds and an asymmetrical shape.

Front

What determines if a molecule is polar or non-polar?

Back

A molecule's polarity is determined by its shape and the electronegativity differences between the atoms. If the molecule has polar bonds and an asymmetrical shape, it is polar. If it has non-polar bonds or a symmetrical shape, it is non-polar.

Front

What is the molecular geometry of a molecule with two bonding pairs and no lone pairs?

Back

Linear.

Front

What is the molecular geometry of a molecule with three bonding pairs and no lone pairs?

Back

Trigonal planar.

Front

What is the molecular geometry of a molecule with four bonding pairs and no lone pairs?

Back

Tetrahedral.

Front

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

Back

Bent.

Front

What is the molecular geometry of a molecule with three bonding pairs and one lone pair?

Back

Trigonal pyramidal.

Front

What is the significance of lone pairs in determining molecular geometry?

Back

Lone pairs occupy space and can affect the shape of the molecule, leading to different geometries compared to molecules with only bonding pairs.

Front

How does electronegativity affect molecular polarity?

Back

Electronegativity is the ability of an atom to attract electrons. A significant difference in electronegativity between bonded atoms can create polar bonds, contributing to the overall polarity of the molecule.

Front

What is a dipole moment?

Back

A dipole moment is a measure of the separation of positive and negative charges in a molecule. It indicates the polarity of the molecule.