Lewis Structures & Covalent Bond

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 a covalent bond involve?

Back

A covalent bond involves the sharing of electron pairs between atoms, typically between nonmetals.

Front

What is a single bond?

Back

A single bond is a covalent bond that involves the sharing of one pair of electrons between two atoms.

Front

What is a double bond?

Back

A double bond is a covalent bond that involves the sharing of two pairs of electrons between two atoms.

Front

What is a triple bond?

Back

A triple bond is a covalent bond that involves the sharing of three pairs of electrons between two atoms.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Front

What is a lone pair of electrons?

Back

A lone pair of electrons is a pair of valence electrons that are not shared with another atom and are not involved in bonding.

Front

How do you determine the central atom in a Lewis Structure?

Back

The central atom is usually the least electronegative atom or the atom that can form the most bonds.

Front

What is the significance of formal charge in Lewis Structures?

Back

Formal charge helps to determine the most stable Lewis Structure by indicating the distribution of electrons among atoms.

Front

What is resonance in chemistry?

Back

Resonance refers to the phenomenon where a molecule can be represented by two or more valid Lewis Structures that differ only in the placement of electrons.