The Modern Period
Alkali metals are a group of elements in Group 1 of the periodic table, known for their high reactivity and tendency to form strong bases when combined with water. This group includes lithium, sodium, potassium, rubidium, cesium, and francium, all of which share similar physical and chemical properties such as low density and melting points. Their reactivity increases as you move down the group due to the decreasing ionization energy.
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