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

How many lone pairs are present in the Lewis structure of carbon dioxide (CO2)?

Back

There are 0 lone pairs in the Lewis structure of carbon dioxide.

Front

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

Back

The Lewis structure for ammonia shows a nitrogen atom bonded to three hydrogen atoms with one lone pair of electrons on the nitrogen.

Front

What is the molecular formula for silicon tetrafluoride?

Back

The molecular formula for silicon tetrafluoride is SiF4.

Front

How many double bonds are present in the Lewis structure of carbon tetrachloride (CCl4)?

Back

There are 0 double bonds in the Lewis structure of carbon tetrachloride.

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

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

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.