What types of elements form ionic compounds?

The elements that tend to form ionic compounds include cadmium, chromium, cobalt, iron, gold, copper, nickel, manganese, mercury, silver, zinc, tin, bismuth and lead. In the periodic table, these elements belong to the B group of the transition metals and groups IVA and VA of the post-transition metals. read more

The elements [element: A substance made of one type of atom only.] in Group 1 of the Periodic Table are called the alkali metals. They form ionic compounds when they react with non-metals. Their ions have a single positive charge. For example, sodium forms sodium ions, Na+. The elements in Group 7 of the Periodic Table are called the halogens. read more