Question

    Among the following options, which one is a non-metallic

    element?
    A Sodium Correct Answer Incorrect Answer
    B Iron Correct Answer Incorrect Answer
    C Chlorine Correct Answer Incorrect Answer
    D Calcium Correct Answer Incorrect Answer

    Solution

    Non-metals are elements that generally have low melting and boiling points, are poor conductors of heat and electricity, and tend to form negatively charged ions (anions) when they react with metals. Chlorine is a non-metal, and is a member of the halogen group of elements. Sodium, iron, and calcium are all metals, with sodium and calcium being in the alkali metal and alkaline earth metal groups respectively, and iron being a transition metal.

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