Bonding & Lewis Structures

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Front

How many covalent bonds does carbon need to form to achieve a full octet?

Back

4

Front

What does each line in a Lewis structure represent?

Back

Each line represents a pair of shared electrons.

Front

In the Lewis structure of water (H2O), how many unshared pairs of electrons does oxygen have?

Back

2

Front

What is the correct Lewis structure for the compound PBr3?

Back

Structure D.

Front

How do you adjust the total number of valence electrons for a 2- charged ion in a Lewis structure?

Back

Add 2 to the total valence number.

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.

Front

What are valence electrons?

Back

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

Front

What is the significance of lone pairs in Lewis structures?

Back

Lone pairs represent unshared pairs of electrons that can affect the shape and reactivity of molecules.

Front

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

Back

Add the valence electrons of all atoms in the molecule, adjusting for any charge.