Question

explain the physical properties of metals and nonmetals define lustre​

Answer 1

Lustre is a property of metal by virtue of which their surface has a shine.

Answer 2

Answer:

Define lustre:

Lustre  is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the Latin lux, meaning "light", and generally implies radiance, gloss, or brilliance. A range of terms are used to describe lustre, such as earthy, metallic, greasy, and silky. Metals have the quality of reflecting light from its surface and can be polished e.g., gold, silver and copper.

Metals

These are very hard except sodium

These are malleable and ductile

These are shiny  

Electropositive in nature

Non Metals

These are soft except diamond

These are brittle and can be breakdown into pieces

These are non-lustrous except iodine

Electronegative in nature

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