Lewis Structures

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 single bond represent in a Lewis structure?

Back

A single bond represents one pair of shared electrons between two atoms.

Front

What does a double bond represent in a Lewis structure?

Back

A double bond represents two pairs of shared electrons between two atoms.

Front

What does a triple bond represent in a Lewis structure?

Back

A triple bond represents three pairs of shared electrons between two atoms.

Front

How many valence electrons does phosphorus (P) have?

Back

Phosphorus has 5 valence electrons.

Front

How many valence electrons does boron (B) have?

Back

Boron has 3 valence electrons.

Front

What is the Lewis structure for PH3?

Back

The Lewis structure for PH3 shows phosphorus in the center with three hydrogen atoms bonded to it and one lone pair of electrons on phosphorus.

Front

What is the Lewis structure for BF3?

Back

The Lewis structure for BF3 shows boron in the center with three fluorine atoms bonded to it, with no lone pairs on boron.

Front

What is the Lewis structure for O3 (ozone)?

Back

The Lewis structure for O3 shows a central oxygen atom bonded to two other oxygen atoms, with one double bond and one single bond, and a lone pair on the central oxygen.

Front

What is the significance of lone pairs in Lewis structures?

Back

Lone pairs represent non-bonding electrons that can affect the shape and reactivity of the molecule.