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Which of the following atomic numbers be...

Which of the following atomic numbers belongs to same period ?

A

5,6,7

B

1,3,5

C

2,4,6

D

9,17,35

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BEYOND PUBLICATION-CLASSIFICATION OF ELEMENTS THE PERIODIC TABLE-EXERCISE
  1. The I.E of 'N' is more than oxygen even though the size of 'O' is less...

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  2. The formula of chloride formed by eka silicon

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  3. Which of the following atomic numbers belongs to same period ?

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  4. The size of Na^+ is less than 'Na' . This is due to

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  5. Which pair of elements are lanthanides ?

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  6. Arrange the following elements in the order of their decreasing metall...

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  7. Arrange the following elements in the order of their increasing non-me...

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  8. Which of the following elements gives the correct increasing order of ...

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  9. Which of the following reasons corresponds to decrease in IP value fro...

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  10. Nuclear charge increase both in a period and group. But, effective nuc...

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  11. Nitrogen (Z=7) is the element of group V of the periodic table. Which...

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  12. Which of the following group elements are called alkali metal family ?

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  13. An element M, is in the 13th group, the formula of its chloride is

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  14. Which of the following sets does not belong to a group ?

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  15. Which is the wrong sequence of the elements in a group ?

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  16. Which of the following sets of elements belongs to alkali metals ?

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  17. The outermost main shell of an element is 'M' shell. This element belo...

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  18. Which of the following is an element in 3^rd period II group

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  19. Actinides belongs to period.

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  20. The electronegativity of the following elements increase in the order

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