a compound (a) which is black of a brown coloured element (X) obtained after it comes in contact with air.identify A and X and give chemical reaction
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The brown coloured metal is copper. Hence ′X′ is copper and the black coloured compound formed is Copper oxide.
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Answer:
Explanation:
Black coloured element is Copper which when mixed with air forms Copper Oxide
A = Copper
X = Copper Oxide
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