Answer :

Two physical properties that differentiate metals from non-metals are-

(i) Metals, except mercury & gallium are solids at room temperature while non-metals, except bromine are solids or gases at room temperature.

(ii) Metals are malleable and ductile while non-metals are non-malleable & non-ductile

(iii) Metals are lustrous while non-metals, except diamond & graphite which are allotropes of carbon as well as iodine, are non-lustrous.

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