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Why is hydrogen placed separately on the...

Why is hydrogen placed separately on the top left corner of the Modern Periodic Table?

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Hydrogen possesses unique properties which make it stand apart from other elements. Its properties resemble those of alkali metals as well as halogens - it can lose one electron like alkali metals and gain one electron like halogens. Hence, it is placed separately on the top left corner of the Modern Periodic Table.
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Knowledge Check

  • The longest period in the Modern Periodic Table is the

    A
    Third period
    B
    Fourth period
    C
    Fifth period
    D
    Sixth period

  • Group I elements in the Modern Periodic Table are known as

    A
    alkali metals
    B
    alkaline earth-metals
    C
    halogens
    D
    noble gases

  • Halogens are present in which group of the Modern Periodic Table?

    A
    1st
    B
    12th
    C
    17th
    D
    18th

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    a] Why are sodium and chlorine placed in the same period in the Modern Periodic Table? b] Why do elements placed in the same group of the periodic table have similar chemical properties? c] Who proposed the modern periodic law? On which fundamental property of an atom is it based?

    On what parameter do the elements are classifed in the modern periodic table?

    Define group and period with reference to the Modern Periodic Table.

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    Modern periodic table is based on

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