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Which of the following statements is in...

Which of the following statements is incorrect from the point of view of modern periodic table ?

A

Elements are arranged in the order of increasing atomic number.

B

There are eighteen vertical columns called groups

C

Transition elements fit in the middle of long periods.

D

Noble gases are arbitrarily placed in eighteenth group.

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VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PPERIIODIC TABLE-EXERCISE
  1. Which of the given elements A , B , C , D and E with atomic numbers 2 ...

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  2. Which of the following elements A , B , C , D and E with atomic numbe...

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  3. Which of the following sets of elements belongs to halogen family?

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  4. Which one of these group of elements is also called the halogen famil...

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  5. On the basis of following features identify correct option. a) T...

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  6. Which of the following statements is incorrect from the point of view...

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  7. Among Al2O3, SiO2, P2O3 and SO2 the correct order of acid strength is

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  8. An atom of an element (X) has its K , L and M shell filled with som...

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  9. Which of the following statements are the characteristics of isotopes ...

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  10. 3 elements x , Y and Z form a Dobereiner triad . Their atomic weights...

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  11. Which of the given elements A , B , C , D and E with atomic numbers 2 ...

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  12. Which of the following elements A , B , C , D and E with atomic numbe...

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  13. Which of the following sets of elements belongs to halogen family?

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  14. Which one of these group of elements is also called the halogen famil...

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  15. On the basis of following features identify correct option. a) T...

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  16. Which of the following statements is incorrect from the point of view...

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  17. Among Al(2)O(3),SiO(2),P(2)O(3) and SO(2) the correct order of acid s...

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  18. An atom of an element (X) has its K , L and M shell filled with som...

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  19. Which of the following statements are the characteristics of isotopes ...

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  20. 3 elements x , Y and Z form a Dobereiner triad . Their atomic weights...

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