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    Classification of Elements and Periodicity in Properties

    Multiple Choice QuestionsMultiple Choice Questions

    331.

    Which of the following elements never show positive oxidation number?

    • O

    • Fe

    • Ga

    • F

    Answer
    332.

    Which of the following element is a metalloid?

    • Bi

    • Sn

    • Ge

    • C

    Answer
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    333.

    What is the name of element with atomic number 105?

    • Kurchatovium

    • Dubnium

    • Nobelium

    • Holmium

    B.

    Dubnium

    The element with atomic number 105 is Dubnium. It is also known as Un-nil-pentin.

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    334.

    Which among the following elements have lowest value of IE1?

    • Pb

    • Sn

    • Si

    • C

    Answer
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    335.

    KI and CusO4 solution when mixed, give :

    • CuI2 + K2SO4

    • Cu2I2 + K2SO4

    • K2SO4 + Cu2I2 + I2

    • K2SO4 + CuI2 + I2

    Answer
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