Question

Copper loses its lustre when exposed to atmosphere due to

Answer 1

they combine with oxygen and form oxides. iron oxidizes into rust (iron III oxide) copper oxidizes, so does aluminum, so do most metals.

Answer 2

Hello

here is your answer

Question-
Copper loses its lustre when exposed to atmosphere due to..

Answer---
Oxidation

Explanation--
Here copper metal which reacts with oxygen,and resulting in the formation of copper oxide, which appears green in color. It is to be noted that copper does not react with water. The outer green layer, formed after the oxidation of copper, is known as patina.

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