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Rubidium and caesium
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Is sodium shiny when it is cut?
Yes, sodium metal is shiny when it is freshly cut. However, it quickly oxidizes in air, forming a dull, oxide layer on its surface.
What are the chemical propertys of sodium?
Sodium is a highly reactive metal that readily forms compounds with oxygen and water. It has a strong affinity for chlorine, forming the salt sodium chloride. It can also react vigorously with acids to produce hydrogen gas.
Is sodium metal kept in oil for safe storage but reacts violently with water?
Yes, storing sodium metal in oil prevents it from reacting with air and moisture, which could cause a violent reaction. However, if sodium metal comes into contact with water, it will react vigorously, releasing hydrogen gas and heat, which can lead to a fire or explosion.
What does potassium look like in its normal state?
Potassium is a soft, silvery metal that is easily cut with a knife. In its normal state, it is a solid at room temperature and has a shiny appearance. It is highly reactive with water and oxygen, quickly forming oxides.
Is cobalt organic or inorganic?
Cobalt is an inorganic element, as it is a metal that does not contain carbon-hydrogen bonds typically found in organic compounds.
