A metalloid is a chemical element that exhibits some properties of metals and some of nonmetals. ... Definition for metalloids: elements with properties intermediate between metals and nonmetals. Boron, silicon, germanium, arsenic, antimony, tellurium, and polonium are metalloids

Difference between metals and non-metals

The metals are generally present in the solid form at room temperature except mercury which is liquid at room temperature. Whereas non-metals may be solid, liquid and gaseous at room temperature.

Metals are good conductors of heat and electricity but non-metals are poor conductors of heat and electricity.

Metals are ductile in nature i.e. it can be drawn into thin wires. But non-metals are not ductile.

Metals are malleable but non-metals are not malleable. Malleable means the property through which metals can be hammered into thin sheets.

Metals are lustrous i.e. having shinning appearance but non-metals are dull in appearance.

Metals contain 1 to 3 electrons in their outermost shell whereas non-metals contain 4 to 8 electrons in their outermost shell.

Metal loses electrons to form electropositive ions but non-metals accept electrons to form electronegative ions.

Metals have low ionization enthalpy and non-metals have high ionization enthalpy.

Metals react with oxygen to form basic oxides whereas non-metals usually react with oxygen to form acidic oxides.

Metals are good reducing agent as it loses electrons easily from its valance shell. But non-metals are good oxidizing agent as it accepts electrons in its outermost shell.

Metals are sonorous in nature i.e. produces sound when hit by an object. but non-metals does not produces any sound.

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