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The pair of elements violating the law o...

The pair of elements violating the law of octaves among the following are

A

Li & Na

B

Mg & Ca

C

P& As

D

F & Cl

Text Solution

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The correct Answer is:
C
P& As
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BRILLIANT PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-LEVEL-I
  1. An element having electronic configuration 1s^(2) 2s^(2) 2p^(6) 3s^(2)...

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  2. The first ionisation potential of Na, Mg, Al and Si are in the order

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  3. The pair of elements violating the law of octaves among the following ...

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  4. Diagonal relationship is due to

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  5. The atom having the valence shell electronic configuration 4s^(2)4p^(2...

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  6. The general electronic configuration of transition elements is:

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  7. The ionic radii of isoelectronic species 'N^(3-), O^(2-)' and 'F^-' in...

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  8. Which of the following is not isoelectronic series:

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  9. The radius of isoelectronic series

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  10. In a period, the elements having least melting point are:

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  11. Which of the following represents a correct sequence of electronegativ...

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  12. Which of the following order of atomic/ionic radius is not correct

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  13. The best reason to account for the general tendency of atomic diameter...

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  14. In which of the following pairs, the ionisation energy of the first sp...

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  15. The correct order of stability of Al^(+), Al^(+2), Al^(+3) is

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  16. Which of the following transitions involves maximum amount of energy?

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  17. Which order is wrong:

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  18. Decreasing order of size of ions is:

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  19. Zinc does not show the variable valency as elements of d-block, becaus...

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  20. The correct order of ionization energies of F^(-), Cl^(-), F and Cl is

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