write down the chemical properties from groups 1 and 2
Answers
Answer:
Explanation:
General physical properties of Group 1 elements:
Alkali metals are grey solids with shiny silvery surfaces when freshly cut.
These surfaces turn dull when exposed to air.
This is because alkali metals are very reactive. They react rapidly with oxygen and water vapour in the air when exposed.
Alkali metals are soft solids and can be easily cut.
Alkali metals have low densities as compared to heavy metals such as iron and copper.
Alkali metals are good conductors of heat and electricity.
Alkali metals have low melting and boiling points as compared to heavy metals such as copper and iron.
Group 2 elements are called alkaline metals because they form alkaline solutions, hydroxides, when reacting with water and their oxides are found in the earth’s crust.
ALKALINE METALS
They have low electron affinity.
Group 1 metals are less reactive than group 2 metals.
Its valence shell contains 2 electrons
They have low electronegativity
Compounds of alkali metals are often insoluble in water
Alkaline metals are usually Shiny, silvery.
They have ions with a +2 charge.
They are solid
They are harder, denser, stronger
They are found in the earth crust