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 it mean for an atom to have an expanded octet?

Back

An expanded octet refers to the ability of certain atoms to accommodate more than eight electrons in their valence shell, typically seen in elements from the third period and beyond.

Front

Which elements are known to cause an expanded octet?

Back

Elements such as phosphorus, sulfur, chlorine, and others in the third period or higher can cause an expanded octet.

Front

Is chlorine capable of forming an expanded octet?

Back

Yes, chlorine can form an expanded octet.

Front

Is fluorine capable of forming an expanded octet?

Back

No, fluorine cannot form an expanded octet; it can only accommodate a maximum of eight electrons.

Front

What is the significance of lone pairs in a Lewis Structure?

Back

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

Front

What criteria determine if a Lewis Structure is valid?

Back

A valid Lewis Structure must satisfy the octet rule for main group elements, have the correct number of total valence electrons, and show proper bonding between atoms.

Front

What is the octet rule?

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 can you identify a valid Lewis Structure?

Back

A valid Lewis Structure will have all atoms with complete octets (or duets for hydrogen), the correct number of total valence electrons, and appropriate bonding.

Front

What is a common mistake when drawing Lewis Structures?

Back

A common mistake is failing to account for the correct number of valence electrons or incorrectly assigning bonds and lone pairs.