Lewis structures

Front

What type of electrons are used when drawing Lewis structures?

Back

Valence electrons.

Front

What is the correct dot diagram for oxygen (O)?

Back

The correct dot diagram for oxygen has 6 valence electrons represented as dots around the symbol O.

Front

How many valence electrons does phosphorus have?

Back

Phosphorus has 5 valence electrons.

Front

How many total valence electrons are participating in bonding in a molecule with 8 valence electrons?

Back

8 valence electrons are participating in bonding.

Front

What is the correct Lewis structure for ammonia (NH3)?

Back

The correct Lewis structure for NH3 shows nitrogen (N) in the center with three hydrogen (H) atoms bonded to it and one lone pair of electrons on nitrogen.

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.

Front

What is the significance of valence electrons in Lewis structures?

Back

Valence electrons determine how atoms bond and the structure of the molecule.

Front

How do you determine the total number of valence electrons in a molecule?

Back

Add the valence electrons of all the atoms in the molecule.

Front

What is the octet rule in relation to Lewis structures?

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 in a Lewis structure?

Back

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