Question

what is the colour of corroded copper​

Answer 1

Explanation:

Just aa iron that is left unprotected in open air will corrode and from a flaky orange - red outer layer , copper that is exposed to the elements undergoes a series of the chemical reaction that give the shiny metal a pale green outer layer called a patina .

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Answer 2

$\huge\red{\boxed{\blue{\mathcal{\overbrace{\underbrace{\fcolorbox{blue}{aqua}{\underline{\red{Orange-red}}}}}}}}}$

Just as iron that is left unprotected in the open air will corrode and form a flaky orange-red outer layer, copper that is exposed to the elements undergoes a series of chemical reactions that give the shiny metal a pale green outer layer called a patina.