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The statement that is not correct for th...

The statement that is not correct for the periodic classification of elements is

A

The properties of elements are a periodic function of their atomic numbers

B

Non-metallic elements are less in number than metallic elements

C

The first ionization energies of elements along a period do not vary in a regular manner with increase in atomic number

D

For transition elements, the d-subshells are filled with electrons monotonically with increase in atomic number

Text Solution

Verified by Experts

The correct Answer is:
D
For transition elements, the d-subshells are filled with electrons monotonically with increase in atomic number
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Knowledge Check

  • The statement that is not correct for periodic classification of elements is

    A
    The properties of elements are a periodic function of their atomic numbers
    B
    Non-metallic elements are less in number than metallic elements
    C
    The first ionization energies of elements along a period do not vary in a regular manner with increase in atomic number
    D
    For transition elements, the d-subshells are filled with electrons monotonically with increase in atomic number

  • The statement that is NOT correct is that

    A
    a furnace lined with haematite is used to convert cast iron
    B
    collectors enhance the wettability of mineral particles during froth floatation.
    C
    in vapour phase refining, metal should form a volatile compound.
    D
    copper from its low grade ores is extracted by hydrometallurgy.

  • Which statement(s) is (are) false for the periodic classification of elements?

    A
    The properties of the elements are the periodic functions of their atomic numbers
    B
    Non-metallic elements are lesser in number than the metallic elements
    C
    The first ionisation energies of the elements along a period do not vary in a regular manner with increase in atomic number
    D
    For transition elements, the d-electrons are filled monotonically with increase in atomic number

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    The table given below lists the contributions and names of scientists who made earlier attempts in the classification of elements. Fill in the blanks.

    The correct statement is

    Which of the following statements is correct with respect to the property of elements in the carbon family with an increase in the atomic number? Their

    Which of the following statements is correct with respect to the property of elements in the carbon family with an increase in the atomic number? Their

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