DIFFERENCE BETWEEN METALS/NON-METALS

• https://www.quora.com/What-is-the-difference-between-metal-and-nonmetal
• 
• https://youtu.be/fWL75-19cx4

• https://byjus.com/chemistry/metals-and-nonmetals/

• https://www.thoughtco.com/metals-versus-nonmetals-608809

• https://keydifferences.com/difference-between-metals-and-non-metals.html

BASIS FOR COMPARISON	METALS	NON-METALS
Meaning	Metals refers to the natural elements that are hard, shiny, opaque and dense.	Non-metals implies those chemical substances that are soft, non-shiny, transparent and brittle.
Example
Nature	Electropositive	Electronegative

• Structure	Crystalline	Amorphic
  Physical State at room temperature	Solid (except mercury and gallium)	Solid or gas (except Bromine)
  Density	High density	Low density
  Appearance	Lustrous	Non-lustrous
  Hardness	Most metals are hard, except sodium.	Most non-metals are soft, except diamond.
  Malleability	Malleable	Non-malleable
  Ductility	Ductile	Non-ductile
  Sonorous	Sonorous	Non-sonorous
  Conduction	Good conductor of heat and electricity	Poor conductor of heat and electricity
  Melting and Boiling point	Very high melting and boiling point.	Low melting and boiling point.
  Electrons	1 to 3 electrons in the outer shell.	4 to 8 electrons in the outer shell.
  Oxygen	React with oxygen and form basic oxides.	React with oxygen and form acidic oxides.
  Acid	React with acids and produce hydrogen gas.	Do not usually react with acids.

Structure

• Crystalline	Amorphic
  Physical State at room temperature	Solid (except mercury and gallium)	Solid or gas (except Bromine)
  Density	High density	Low density
  Appearance	Lustrous	Non-lustrous
  Hardness	Most metals are hard, except sodium.	Most non-metals are soft, except diamond.
  Malleability	Malleable	Non-malleable
  Ductility	Ductile	Non-ductile
  Sonorous	Sonorous	Non-sonorous
  Conduction	Good conductor of heat and electricity	Poor conductor of heat and electricity
  Melting and Boiling point	Very high melting and boiling point.	Low melting and boiling point.
  Electrons	1 to 3 electrons in the outer shell.	4 to 8 electrons in the outer shell.
  Oxygen	React with oxygen and form basic oxides.	React with oxygen and form acidic oxides.
  Acid	React with acids and produce hydrogen gas.	Do not usually react with acids.