4. Write the charge of each ion. Here are some other examples of dot and cross diagrams for the formation of ions in some ionic compounds – magnesium oxide and calcium chloride.

For example Magnesium (Mg ... positive magnesium ion is attracted to the negatively charged chlorine ion. Ionic compounds form what is known as a lattice structure. This is a regular arrangement ...

A little water helps expose the sodium so it can react with the chlorine gas. The reaction releases a lot of heat as the ionic compound sodium chloride is formed. A sodium and chlorine atom are near ...

The colors of rubies and emeralds are so striking that they define shades of red and green – ruby red and emerald green. But ...