Bonding & Lewis Structures

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 are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

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.

Front

What is the significance of counting valence electrons when drawing Lewis Structures?

Back

Counting valence electrons is crucial because it helps ensure that the correct number of electrons are represented in the structure, which affects the molecule's stability and bonding.

Front

What happens to the valence electron count of an ion with a +1 charge?

Back

For a +1 charged ion, you subtract 1 from the total number of valence electrons.

Front

What is a double bond in a Lewis Structure?

Back

A double bond is a type of chemical bond where two pairs of electrons are shared between two atoms, represented by two lines in a Lewis Structure.

Front

Which molecule forms a double bond: CO, CO2, H2O, or HCN?

Back

Carbon dioxide (CO2) forms a double bond.

Front

What is the correct Lewis structure for PBr3?

Back

The correct Lewis structure for PBr3 is represented by structure D.

Front

How do you represent lone pairs in a Lewis Structure?

Back

Lone pairs are represented by pairs of dots around the atom in the Lewis Structure.

Front

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

Back

The correct Lewis dot structure for fluorine (F2) is represented by structure B.