Lewis Dot Structures

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 many valence electrons does oxygen have?

Back

Oxygen has 6 valence electrons.

Front

What is the Lewis structure for water (H2O)?

Back

The Lewis structure for water shows the oxygen atom in the center with two hydrogen atoms bonded to it, and two lone pairs of electrons on the 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.

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 correct Lewis structure for PBr3?

Back

The correct Lewis structure for PBr3 has phosphorus in the center bonded to three bromine atoms, with one lone pair on phosphorus.

Front

What is the maximum number of bonds that carbon can form?

Back

Carbon can form a maximum of four bonds.

Front

How many double bonds are present in CCl4?

Back

CCl4 has 0 double bonds.

Front

What is the Lewis structure for CH3Cl?

Back

The Lewis structure for CH3Cl shows a carbon atom bonded to three hydrogen atoms and one chlorine atom.

Front

What is the role of the octet rule in 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.