Lewis Structures (single bonds only)

Front

What is the octet rule?

Back

The octet rule states that most elements need 8 valence electrons to be stable.

Front

How many valence electrons does hydrogen need to be stable?

Back

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

Front

What type of electrons are used when writing Lewis Structures?

Back

Only valence electrons are used when writing Lewis Structures.

Front

What is a single bond in terms of electron pairs?

Back

A single bond involves the sharing of one pair of electrons between two atoms.

Front

What is a double bond in terms of electron pairs?

Back

A double bond involves the sharing of two pairs of electrons between two atoms.

Front

What is a triple bond in terms of electron pairs?

Back

A triple bond involves the sharing of three pairs of electrons between two atoms.

Front

What is the correct formula for ammonia?

Back

The correct formula for ammonia is NH₃.

Front

What is a Lewis Structure?

Back

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

Front

What do lone pairs represent in a Lewis Structure?

Back

Lone pairs represent pairs of valence electrons that 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 element or the one that can form the most bonds.