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What is an alkali metal?
ChemistryElements
Quick Answer
An alkali metal is a Group 1 element such as lithium, sodium, or potassium. These metals are highly reactive because they have one valence electron.
The Full Story
Alkali metals are soft, silvery metals that react strongly, especially with water and oxygen. Their reactivity increases as you move down the group, which is why cesium is more reactive than lithium. The name comes from the fact that their compounds form alkaline solutions. Sodium and potassium are vital in biology, while lithium is widely used in batteries. Because of their extreme reactivity, alkali metals are usually stored under oil or in controlled conditions.
Key Facts
1.Group 1 elements are alkali metals
2.Reactivity generally increases down the group
3.Lithium is widely used in rechargeable batteries
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