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    Question

    Which of the following is a

    non-metal?
    A Nitrogen Correct Answer Incorrect Answer
    B Aluminium Correct Answer Incorrect Answer
    C Iron Correct Answer Incorrect Answer
    D Zinc Correct Answer Incorrect Answer

    Solution

    тАв Nitrogen (Atomic number -7, Group 15 of the periodic table): тАв Elemental nitrogen is a colourless, odourless, tasteless and mostly inert diatomic gas at standard conditions. тАв Nitrogen constitutes 78% by volume of Earth's atmosphere. тАв Nitrogen occurs in all living organisms. тАв The non-metals include carbon (C), nitrogen (N), oxygen (O), phosphorus (P), sulfur (S), selenium (Se).

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