Groups 1 and 2
• Groups 1 and 2 elements are always combined with other elements.
• The elements in Groups 1 and 2 are all metals except for hydrogen.
• Alkaline earth metals are not as active as the alkali metals.
•With Groups 13–18, a single group can contain metals, nonmetals, and metalloids.
• Nitrogen and phosphorus are required by living things.
• The halogen group will form salts with alkali metals.