Ionic Bonds 7.1.9

​Metals = Pink
Nonmetals = Blue
Metalloids = Green

​

​Notebook
page 144

Ionic bonds form when an atom gains or loses valence electrons.

If it gains an electron, then the atom will become negatively charged.

If it loses and electron, then it will become positively charged.

​

​Ionic Bonds

​Examples:

-sodium & oxygen

-Magnesium & chlorine

​

We use a superscript to show the charge of an ion.
For example:
if fluorine gained one electron
F^-
if Lithium lost 2 electrons
Li²⁺

​

​If lose e = positive
If gain e = negative

​When an atom gains or loses electrons, it becomes an ion or an atom with a positive or negative charge

​FYI
Metal atoms tend to give away electrons
& nonmetal atoms receive atoms!

Another name for an ionic compound is SALT.


There are hundreds of different types of salt.

​Any compound that consists of atoms joined by an ionic bond is a salt!

They tend to have the following properties:

- brittle
- high melting point
- crystal structure

​Ionic Compounds
Properties