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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 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

  • The correct statement is

    A
    In a population, number of births is different from birth rate
    B
    A sigmoid growth curve is depiction of exponential growth
    C
    In a logistic growth curve the asymptote is beyon the carrying capacity
    D
    r' is equal to the difference between number of births and number of deaths in a population.

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    What is the basis of classification of elements in the periodic table?

    What are the basis of classification of elements in the modern periodic table?

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

    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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