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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
    • KCET PREVIOUS YEAR PAPERS-MODEL TEST PAPER 3-(CHEMISTRY)
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    3. Which is not easily precipitated from aqueous solution?

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    4. The number of d-electrons Fe^(2+)(Z=26) is not equal to that to the

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    7. Which is not a Lewis acid?

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    9. Calculate the volume of hydrogen at NTP obtained by passing a current ...

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    10. One of the following is not an example for a redox reaction , it is :

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    11. The atomic weight of a metal (M) is 27 and its equivalent weight is 9,...

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    12. An atom of radium combines with two atoms of chlorine to form RaCl2 mo...

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    13. Total number of valency electrons in phosphonium ion PH(4)^(+) is

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    18. Which one is an acidic salt

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    19. In a reaction 2A product, the concentration of A decreases from 0.5 mo...

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    20. According to phase rule, if P = 3, C = 1, then F must be equal to

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