group 2

• the atomic radius increases down the group since the elements have more electrons
• the melting point decreases down the group since the atomic radius increases so the nuclear attraction to the delocalised electrons decreases
• the ionisation energy decreases down the group as the attraction between the nucleus and the outer electrons decreases as the atomic radius and shielding increases
• solubility increases down the group
• pH increases down the group since the solubility increases so more hydroxide ions are released
• reacts with water to form metal hydroxide and hydrogen
• reacts with acid to form salt and hydrogen
• react with oxygen to form metal oxide
• as a metal oxide react with water to form a metal hydroxide
• metal carbonate and hydrochloric acid makes salt, carbon dioxide and water