Chemistry: Chemical Bonding and Structure

A set of flashcards to review key concepts related to chemical bonding and structure based on lecture notes.

What does the octet rule state in chemistry?

It states that during the formation of a chemical compound, each atom tends to have eight electrons in its highest occupied energy level by gaining, losing, or sharing electrons.

Why are noble gases considered stable?

They have fully saturated outer shells and very stable electron configurations, typically having eight valence electrons.

What is an ionic bond?

An ionic bond is formed when metal cations bond with non-metal anions, resulting in compounds like sodium chloride (NaCl).

What is lattice energy in ionic compounds?

Lattice energy is the energy change when gaseous ions come together to form one mole of a solid ionic compound.

How is covalent bonding defined?

Covalent bonding occurs when a pair of electrons is shared between two atoms.

What are the three main types of chemical bonds?

Covalent, ionic, and metallic bonds.

What is the role of ionization energy in the formation of ionic bonds?

Low ionization energy of metallic elements favors the formation of ionic bonds.

What is the difference between a sigma and a pi bond?

A sigma bond is formed by head-to-head overlap of atomic orbitals, while a pi bond is formed by lateral overlap.

What is hybridization in chemistry?

Hybridization describes the mixing of atomic orbitals on the central atom to predict molecular shapes.

What is the significance of molecular orbital theory?

It accounts for covalent bonds through the overlap of atomic orbitals and describes the distribution of electrons in molecules.