Notes, Exercises, Videos, Tests and Things to Remember on Non-Metals
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Non-metals are the elements in groups 14-16 of the periodic table. Non-metals are the bad conductor of electricity or heat. As opposed to metals, non-metallic elements are very brittle and cannot be rolled into wires or pounded into sheets. Non-metals have low melting and boiling points.
Silicon is not found in the pure state. Silicon is the most abundant electropositive element in the earth’s crust. It’s a metalloid with a marked metallic lustre and very brittle. Some important ores of silicon are:
Sulphur is a chemical element with symbol S and atomic number 16. It is an abundant, multivalent non-metal. Some important ores of sulphur are:
The ores of silica are:
The ores of sulphur are:
The properties of sulphur are:
The properties of silicon are:
The uses of sulphur are:
The uses of silicon are:
Non-metals are ______ conductor of electricity or heat.
Which one is not the ore of silicon?
Which one is not the ore of sulphur?
Atomic no. of sulphur is ______.
Atomic no. of silicon is ______.
Silicon is a _____.