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The statement that is not correct for pe...

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

A

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

B

The properties of elements are the periodic functions of their atomic numbers

C

The first ionisation energies of elements along a period vary in a regular manner with increase in atomic number

D

Non-metallic elements are lesser in number than metallic elements.

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • Which of the following statements is not correct regarding halides of group 13 elements ?

    A
    `BF_(3)` is a weaker Lewis acid than `BCl_(3)`
    B
    Boron halides act as Lewis acids.
    C
    The tendency of form `ppi-ppi` double bond is less in `BF_(3)` than in `BCl_(3)`.
    D
    Aluminium halides exist as dimers but corresponding boron halides are monomers.

  • The number of which of the following atomic particles plays a major role in classification of elements in the Modern Periodic Table?

    A
    neutron
    B
    electron
    C
    proton
    D
    all of the these

  • The fourth period of the p-block elements contains:

    A
    6 elements
    B
    8 elements
    C
    18 elements
    D
    10 elements

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    State the modern periodic law for classification of elements. How many (a) groups and (b) periods are there in the modern periodic table ?

    Select the correct order of classification of Rana tigrina upto genus

    Give an account of the process adopted by Mendeleev for the classification of elements. How did he arrive at "Periodic Law" ?

    Give an account of the process adopted by Mendeleev for the classification of elements. How did he arrive at "periodic law"?

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