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    Question

    Pick the odd one

    out.
    A Nitrogen Correct Answer Incorrect Answer
    B Iron Correct Answer Incorrect Answer
    C Oxygen Correct Answer Incorrect Answer
    D Fluorine Correct Answer Incorrect Answer

    Solution

    The odd one out among the options provided is "Iron" (option 2). Nitrogen, Oxygen, and Fluorine are all gases at room temperature and are part of the group of elements known as the "diatomic nonmetals." Iron, on the other hand, is a solid at room temperature and is classified as a metal. Therefore, Iron stands out as the odd one out in terms of its physical state and classification among the options given.

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