DIFFERENCE BETWEEN METALS AND NON METALS:
|1.||They are hard but the exception with sodium which is soft.||They are brittle but diamond is very hard.|
|2.||They are solid with the exception of mercury. Mercury is liquid at room temperature.||They are available in all the states of matter… solid, liquid and gas.|
|3.||They have metallic shine.||They have nonmetallic shine.|
|4.||Metals are good conductor of heat and electricity.||Nonmetals are bad conductor of heat and electricity but graphite is good conductor of heat and electricity.|
|5.||Metals are ductile because they can cut into thin wires.||Nonmetals are non-ductile because they cannot cut into thin wires.|
|6.||Metals are malleable because they can be easily hammered into thin sheets.||Nonmetals are non-malleable.|
|7.||Metals have high melting and boiling point.||Nonmetals have low melting and boiling point but diamond has high melting and boiling point.|
|8.||When they are reacted with oxygen, they form oxides with basic nature.
|When they are reacted with oxygen, they form oxides with acidic nature.
|Symbol of element||B||Si||Ge||As||Sb||Te||At|
Metalloids are economically important because of their unique connectivity properties. They only partially conduct electricity. Due to this property they are valuable in the semi-conductor and complex chip industry.