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In a table of elements, each element has...

In a table of elements, each element has similar properties with eighth element. Which law do they obey? Who found it ?

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BEYOND PUBLICATION-CLASSIFICATION OF ELEMENTS THE PERIODIC TABLE-EXERCISE
  1. The ending element in any period in the periodic table is…………

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  2. The general electronic configuration of elements of p-block is represe...

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  3. In a table of elements, each element has similar properties with eight...

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  4. Which period starts with M main shell? Name the sub-shells in it? How ...

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  5. Which is easy to remove electron between the element having electronic...

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  6. For a element, the value of electron gain enthalpy is positive. Which ...

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  7. Element with electronic configuration 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4...

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  8. The element with atomic number 7 is found in

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  9. Moseley calculated the number of positive charges in the atoms by anal...

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  10. Elements with electronic configuration ns^1 and ns^2 are called

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  11. Atomic weight =

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  12. No. of groups in modern periodic table................

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  13. According to Mulliken, electronegativity =

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  14. Elements from ^(58)Ce to ^(71)Lu are called

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  15. Correct order of size

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  16. Electron affinity of Fluorine is less than that of Chlorine because

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  17. In dobereiner triad, the atomic weight of middle element is :

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  18. Which of the following relation is correct ?

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  19. 5f elements are called............

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  20. Periodicity is observed in periodic table due to reappearance of simil...

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