Chemistry – The Periodic Table - Group I properties | e-Consult
The Periodic Table - Group I properties (1 questions)
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Based on the information provided about lithium, we can predict the following properties for rubidium and cesium:
- Rubidium (Rb): Rubidium is expected to be a solid at room temperature, similar to lithium. It will be more reactive than lithium, and therefore less soft. It will react with water, although the reaction will be faster than that of lithium. Rubidium is a soft, silvery-white metal.
- Cesium (Cs): Cesium is expected to be a solid at room temperature and will be even more reactive than rubidium. It will react vigorously with water, producing hydrogen gas and cesium hydroxide. Cesium is a soft, silvery-white metal and is the most reactive of the alkali metals.
Comparison to Lithium: Rubidium and cesium will be more reactive than lithium. They will be less soft than lithium. Their reactivity with water will be greater than that of lithium. They will also be more likely to tarnish in air than lithium.