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28 January, 21:52

Which list of elements contains two metalloids? (1) Si, Ge, Po, Pb (3) Si, P, S, Cl (2) As, Bi, Br, Kr (4) Po, Sb, I, Xe

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  1. 28 January, 21:54
    0
    Answer is (1) - Si, Ge, Po, Pb

    Metalloids are elements which share both non-metallic and metallic characteristics. Recognized metalloids are boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb) and tellurium (Te).

    According to given choices 1st one has Si and Ge which are both metalloids.
  2. 28 January, 22:21
    0
    The answer is (1). Si and Ge are both metalloids (semimetals)
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