A metal (m) doesn't liberate hydrogen from acid but react with oxygen to give black colour compound . Identify the metal and also write the reaction .
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metal 'm' is copper.
Cu + HCl ---> no reaction
because copper is less reactive than hydrogen.
Cu + O2 ---> CuO
Cu + HCl ---> no reaction
because copper is less reactive than hydrogen.
Cu + O2 ---> CuO
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