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29/09/2021 9:37 pm
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Silver metal does not combine easily with oxygen but silver jewellery tarnishes after some time. How?
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29/09/2021 9:38 pm
The silver articles combine slowly with the hydrogen sulphide gas present in air to form a black coating of silver sulphide.
The tarnishing of the silver objects is due to this silver sulphide coating on the object’s surface.