telle about properties of metals and non metals
Answers
Physical Properties of Metals:
Metals can be hammered into thin sheets. ...
Metals are ductile. ...
Metals are a good conductor of heat and electricity.
Metals are lustrous which means they have a shiny appearance.
Metals have high tensile strength. ...
Metals are sonorous. ...
Metals are hard.
Properties of non metals
High ionization energies.
High electronegativities.
Poor thermal conductors.
Poor electrical conductors.
Brittle solids—not malleable or ductile.
Little or no metallic luster.
Gain electrons easily.
Dull, not metallic-shiny, although they may be colorful.
Explanation:
hope you will understand
Metals:
All those elements which form positive ions by losing electrons are called metals. They have 1 to 3 electrons in their valence shell.
Properties of metals:-
- Metallic lustre: - Metals have shinning surface. Aluminum and magnesium appear white , gold is yellow and copper is reddish brown in colour.
- Hardness:- This varies from metal to metal. Metals are generally hard. sodium and potassium are so soft that they can be easily cut by a knife.
- Malleability :- Some metals can be beaten into thin sheets , e.g , gold anf silver.
- Ductility:- The ability of metals to be drawn into thin wires called ductility. Gold is most ductile metal.
- Conductivity of heat and electricity:- Metals are good conductors of heat and electricity. They have high melting point. Silver and copper are best conductor of heat and electricity. Mercury is bad conductor of them.
- Sonority:- Metals are sonorous. i.e., they produce a sond on striking a hard surface.
- Metals are solid at room temperature except mercury and have a high densities except Na and K.
Non metals :-
All those elements which form negative ions by gaining electrons are called non metals.
Properties of non metals:-
- Non metals are neither ductile nor malleable.
- They are either solids or gases except bromine which is a liquid.
- They are bad conductors of heat and electricity except graphite. ( an allotrope of carbon)
- Theya are non lustrous and cannot be polished except iodine.
- They are brittle in nature and have low melting and boling points except graphite.
●Hope it helps you