Covalent Lewis Structures

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond formed when two atoms share one or more pairs of electrons.

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.

Front

How many valence electrons does carbon (C) have?

Back

Carbon has 4 valence electrons.

Front

What is the significance of lone pairs in Lewis structures?

Back

Lone pairs represent pairs of valence electrons that are not involved in bonding and can affect the shape and reactivity of the molecule.

Front

In CO2, how many total pairs of electrons are shared between carbon and oxygen?

Back

In CO2, there are 2 shared pairs of electrons between carbon and each oxygen atom.

Front

What is the molecular geometry of CO2?

Back

The molecular geometry of CO2 is linear.

Front

How do you determine the number of lone pairs in a molecule?

Back

To determine the number of lone pairs, count the total valence electrons, subtract the number of bonding electrons, and divide by 2.

Front

What is the correct Lewis dot structure for fluorine (F2)?

Back

The correct Lewis dot structure for F2 shows two fluorine atoms sharing one pair of electrons, with three lone pairs on each atom.

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

What is a double bond?

Back

A double bond is a type of covalent bond where two pairs of electrons are shared between two atoms.