Lewis Dot Structures Review

Front

What is a Lewis Dot Structure?

Back

A Lewis Dot 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

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

Back

To determine the total number of valence electrons, add the valence electrons of each atom in the molecule based on its group number in the periodic table.

Front

What is the significance of lone pairs in Lewis Dot Structures?

Back

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

Front

What is the octet rule?

Back

The octet rule states that atoms tend to form bonds until they are surrounded by eight valence electrons, achieving a stable electron configuration.

Front

How do you represent double bonds in Lewis Dot Structures?

Back

Double bonds are represented by two pairs of dots or a line connecting the two atoms.

Front

What is the correct Lewis Dot Structure for carbon dioxide (CO2)?

Back

The correct Lewis Dot Structure for CO2 shows a carbon atom double bonded to two oxygen atoms, with each oxygen having two lone pairs.

Front

What is the correct Lewis Dot Structure for ammonia (NH3)?

Back

The correct Lewis Dot Structure for NH3 shows a nitrogen atom bonded to three hydrogen atoms, with one lone pair on the nitrogen.

Front

How do you identify the central atom in a Lewis Dot Structure?

Back

The central atom is usually the least electronegative atom or the atom that can form the most bonds.

Front

What is the correct Lewis Dot Structure for water (H2O)?

Back

The correct Lewis Dot Structure for H2O shows an oxygen atom bonded to two hydrogen atoms, with two lone pairs on the oxygen.

Front

What is the difference between a single bond and a double bond in Lewis Dot Structures?

Back

A single bond involves one pair of shared electrons, while a double bond involves two pairs of shared electrons.