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    5. _____ element has the atomic number 30?

    Question

    _____ element has the atomic number 30?

    A Copper Correct Answer Incorrect Answer
    B Zinc Correct Answer Incorrect Answer
    C Iron Correct Answer Incorrect Answer
    D Cobalt Correct Answer Incorrect Answer

    Solution

    Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a silvery-greyish appearance when oxidation is removed. 

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