Metals: The substances which have the properties of being hard, molten, lustrous, malleable, ductile, etc., are called metals.
- They are good conductors of heat and electricity.
- Metals are Easily corrodible and form basic oxides.
- It Has low electronegativities.
- Metals can lose electrons, and they work as good reducing agents.
Non-metals: Nonmetals can be in a solid, liquid, or gaseous state.
- Except for graphite, non-metals are poor conductors of heat and electricity.
- Non-metals have no ductility nor are they ductile.
- The number of electrons in the outer shell of a non-metal is 4-8.
- Nonmetals have the property of easily gaining or losing valence electrons.
- Whenever they come in contact with oxygen it can form acidic oxides and act as great oxidizing agents.
Calcium: Calcium is considered a metal because it is more likely to give up its two valence electrons in the outermost shell to reach the configuration of argon.
- The chemical symbol of Calcium is Ca and the atomic number is 20.
- It is quite reactive at standard temperature and pressure.
- Calcium is a very ductile silver metal.
- Calcium is used as a reducing and alloying agent for metals.