If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of _____________ .

If copper is kept open in air, it slowly loses its shining brown surf

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If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of _____________ .

If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of _____________ .

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