what is the basic characteristics of non-metallic minerals?
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Non metallic minerals lacks luster or shine unlike metallic minerals they are also not very hard as metallic minerals. Metallic minerals are ductile and malleable on the opposite non metallic are not. Non metallic are easier the break than metallic minerals
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The nonmetallic minerals (carbon, diamond, coals, bitumen, asphalt, boron, sulfur, rock salt, etc.) lack the properties of the metallic minerals such as a bright metallic luster, hardness, density, and good conduction of heat and electricity.
also they are generally electron donar ,
they have high electronegativity also ( tendency to pull electron pair toward itself )
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