Lewis Structures, VSEPR, Polarity and IMFs

Front

What is a Lewis Structure?

Back

A Lewis Structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.

Front

What does VSEPR stand for?

Back

VSEPR stands for Valence Shell Electron Pair Repulsion, a theory used to predict the geometry of individual molecules based on the repulsion between electron pairs.

Front

What is polarity in chemistry?

Back

Polarity refers to the distribution of electrical charge over the atoms joined by the bond. A polar molecule has a net dipole moment due to the presence of polar bonds.

Front

What are intermolecular forces (IMFs)?

Back

Intermolecular forces are forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions). They are responsible for the physical properties of substances.

Front

What type of bond is formed when electrons are shared equally between two atoms?

Back

A nonpolar covalent bond.

Front

What type of bond is formed when electrons are shared unequally between two atoms?

Back

A polar covalent bond.

Front

How many electrons does hydrogen need to achieve a stable electron configuration?

Back

Hydrogen needs 2 electrons in its valence shell to be stable.

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Front

What is a hydrogen bond?

Back

A hydrogen bond is a weak attraction between a hydrogen atom bonded to a highly electronegative atom and another electronegative atom.

Front

What is the shape of an ammonia (NH3) molecule according to VSEPR theory?

Back

The shape of an ammonia molecule is trigonal pyramidal.