Lewis structures (reg)

Front

What is a Lewis structure?

Back

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

Front

What does the octet rule state?

Back

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

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 a single bond in a Lewis structure?

Back

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

Front

What is a double bond in a Lewis structure?

Back

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

Front

What is a triple bond in a Lewis structure?

Back

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

Front

How do you represent lone pairs in a Lewis structure?

Back

Lone pairs are represented as pairs of dots around the atom in the Lewis structure.

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

How do you calculate formal charge?

Back

Formal charge = (Valence electrons) - (Non-bonding electrons) - 0.5*(Bonding electrons).

Front

What is resonance in the context of Lewis structures?

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.