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Copper & silver are below hydrogen in electrochemical series & yet they are found in combined states as sulphides in nature . comment.

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The reaction between sulphur and these metals becomes feasible at high temperature inside the earth. Hence, these metals exist as sulphides( in the addition to the free or native state).

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becoz they r less reactive than hydrogen......n there fore they r found in combined states with sulphide in nature

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