what is metal and non metal
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metal is a substance that had properties like conductivity of electricity, ductility (ability to be formed rods), etc.
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Elements which lose electrons in order to attain octet configuration and become cations are called Metals .
They have 1 , 2 or 3 valence electrons. ( exception : Hydrogen )
Ex - Sodium , Magnesium .
Elements which gain electrons in order to attain octet configuration and become anions are called Non Metals .
They have more than 3 valence electrons.
Ex - Oxygen , Carbon .
They have 1 , 2 or 3 valence electrons. ( exception : Hydrogen )
Ex - Sodium , Magnesium .
Elements which gain electrons in order to attain octet configuration and become anions are called Non Metals .
They have more than 3 valence electrons.
Ex - Oxygen , Carbon .
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