X is metal used for making jewellery when exposed to atmosphere react with Y to form black coating due to formation of Z. Identify X,Y, and Z. Write the chemical reaction.
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Answer:
X is copper and y is silver and z is silver sulphate
Explanation:
copper is metal used to make jewellery and silver which is mixed with jewellery ornaments when live in air it react with silver form black coating due to formation of silver sulphate
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