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Write the name and deduce the atomic num...

Write the name and deduce the atomic numbers of the following atoms :
(i) The third alkali metal.
(ii) Second transition element.
(iii) The fourth noble gas.
(iv) Fourth element in the second period.

Text Solution

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`(i), K, 19 (ii) Ti, 22 (iii) Kr, 36 (iv) C, 6.`
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Write the names and atomic numbers of the following elements : (i) The fourth alkali metal (ii) The third alkaline earth metal (iii) The fifth element of the first transition series (iv) The first inner transition element and (v) The sixth noble gas.

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Knowledge Check

  • The element present in the fourth period and in the second group is

    A
    Calcium
    B
    Potassium
    C
    Scandium
    D
    Magnesium

  • The atomic number of elements of second inner transition elements lie in the range of

    A
    88 to 101
    B
    89 to 102
    C
    90 to 103
    D
    91 to 104

  • The difference in atomic numbers of the inert gas and alkali metal in the 5th period of the moden long form of periodic table is

    A
    17
    B
    20
    C
    12
    D
    16

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    What would be the atomic number of the next (i) alkali metal (ii) alkaline earth metal (ii) halogen and (iv) inert gas If discovered in future ?

    What is the atomic number of the element present in the second period anf group 15.

    Observe the following diagram and write the answers of the following question Write the atomic numbers of first two elements in the second group.

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