write the properties of both metals and non-metals explain it in detail and give exceptions if any
Answers
Metals
Majority elements are metals. This includes alkali metals, transition metals, lanthanides, actinides, and alkaline earth metals. Metals are separated by nonmetals on a periodic table through a zigzag line starting from carbon, till radon. The elements between the two are phosphorus, selenium and iodine. These elements and elements right to them in the periodic table are nonmetals. Elements present just to the left of the line are termed as semimetals or metalloids. These will have the combined properties of both metals and nonmetals.
Physical properties of metals
Shiny (lustrous) in nature
Metal is a good conductor of electricity and heat
Density and melting point is high
Mouldable (Malleable)
Ductile
At room temperature it is in solid form except for mercury
Opaque
Chemical properties of metals
Easily corrodible
Can lose electrons
Form basic oxides
Have lower electronegativities
Good reducing agents
Nonmetals
Very few elements in the periodic table are nonmetals. These are present on the right hand side in the periodic table. Elements that come under nonmetals are sulfur, carbon, all halogens, phosphorus, hydrogen, oxygen, selenium, nitrogen and noble gases.
Physical properties of non-metals
Poor conductors of electricity and heat
Non-Ductile metals
Brittle solids
May be solids, liquids or gases at room temperature
These are not sonorous
Transparent
Chemical properties of non-metals
The number of electrons in the the outer shell is generally 4-8
Easily gain or lose valence electrons
Form acidic oxides whenever they come in contact with oxygen
High electronegative elements
Great oxidizing agents
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