A non metal which is lustrous is:

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brass

graphite

Silicon

Nitrogen

answer is B.

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Detailed Solution

Concept- Lustre refers to a shiny surface such as gold, silver, copper, or steel. Mostly metals are lustrous and non-metals are non-lustrous.
Non-metals are the elements found on the right of the periodic table (except Hydrogen). They are capable of forming negative ions because of their high electronegativity compared to metals.They usually have 4,5,6, or 7 valence electrons.
Silicon is the non metal which is lustrous, has the shine like metal and is in the form of crystal as metals are.
Brass is an alloy and not a non-metal.
Graphite is an allotrope of carbon that is not lustrous.
Nitrogen is a gas and is not lustrous.
Hence, the correct answer is 2.

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