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Alkali Metal/Group 1 Metals (Elements (Potassium, Rubidium, Sodium,…
Alkali Metal/Group 1 Metals
Properties
Low melting and boiling point
Good conductor of heat and electricity
Low Density
Shiny
Soft
Trends down the group
Melting and boiling point decrease down the group
Tarnishing point increase as down the group
More dense down the group
More reactive down the group
Elements
Potassium
Rubidium
Sodium
Caesium
Lithium
Francium
Reaction with water
Releases gas
Floats on water
Dissolves in water
Releases flame
Explosion
Glides on the surface
Equations
Alkaline metal+Water -> Alkaline metal hydroxide+Hydrogen Gas
Important
Sodium has higher dense than potassium
Explode when contact with chlorine