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Which of the following sets of atomic nu...

Which of the following sets of atomic numbers belongs to that of alkali metals?

A

1,12,30,4,62

B

37,19,3,55

C

9,17,35,53

D

12,20,56,88

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The correct Answer is:
B
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DINESH PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-All Questions
  1. The ionisation potential is lowest for the

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  2. The element with highest electron affinity among the halogens is

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  3. Which of the following sets of atomic numbers belongs to that of alkal...

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  4. Which of the following statement about fluorine is not correct?

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  5. lonisation energy is highest in

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  6. The atomic radius increases as we move down a group because

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  7. Which one of the following pairs of atomic numbers, represents element...

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  8. Consider the following changes A to A^(+) + e^- , E1 and A^+ to A^(2+)...

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  9. The isoelectronic ion having lowest ionisation energy is

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  10. The decreasing order of the ionization potential of the following elem...

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  11. Which of the following does not exhibit the periodicity in properties ...

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  12. Which one of the following is an incorrect statement?

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  13. The electronic configuration of element A, B, and C are [He]2s^(1),[Ne...

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  14. Which among the following species has the highest ionisation energy ?

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  15. Eka-aluminium and Eka-silicon are known as :

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  16. Which of the following order is wrong-

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  17. Which is true about the electronegative order of the following element...

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  18. The element with atomic number 56 belongs to which block ?

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  19. Which of the following order is correct for the first ionozation poten...

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  20. Electron affinity depends on

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