IDENTIFY THE GROUP

one valence electron

• 1A

• 2A

• 3A

• 4A

easily removed

• 1A

• 2A

• 3A

• 4A

–ease of removal increases as atomic size increases; ionization is easy

• 1A

• 2A

• 3A

• 4A

most reactive of all metals

• 1A

• 2A

• 3A

• 4A

cations are stable chemically and the free elements are not found in nature

• 1A

• 2A

• 3A

• 4A

–found in combination with other metals;

only occur as compounds

• 1A

• 2A

• 3A

• 4A

they form white solid hydrides readily when heated in hydrogen gas

• 1A

• 2A

• 3A

• 4A

high affinity for oxygen to readily form oxides

• 1A

• 2A

• 3A

• 4A

react vigorously with water to form hydrogen gas and a metallic hydroxide –for this reason, the metals are stored under kerosene and coated with paraffin or other protective procedures

• 1A

• 2A

• 3A

• 4A

in liquid ammonia form a blue solution

• 1A

• 2A

• 3A

• 4A