Ions formation

Elements can be found in

• time table

• Periodic Table

What charge will a Sodium ion have?

• +

• +2

What charge will an oxide ion have?

• -

• -2

• -3

What charge will an aluminium ion have?

• +

• +2

• +3

How many valence electrons does magnesium have?

• 1

• 2

• 3

If an atom has 1 valence electrons, what charge will it have as an ion?

• +

• +2

• +3

If an element gains 1 electron, what charge will it have?

• -1

• +1

Calcium will......... valence electrons when forming an ionic bond.

• gain 2

• lose 2

Chlorine will ........ valence electrons when forming an ionic bond.

• gain 1

• lose 1

The bonding in sodium chloride is

• covalent bonding

• Ionic bonding