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First four ionisation energy values of a...

First four ionisation energy values of an element are 191, 578, 872 and 5972 K.Cals The number of valence electrons in the element is

A

4

B

3

C

1

D

2

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The correct Answer is:
B
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AAKASH SERIES-PERIODIC CLASSIFICATION-OBJECTIVE EXERCISE - 1 (IONISATION POTENTIAL)
  1. The first ionisation potential is maximum for

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  2. Second ioniation energy is higher than first ionisation energy for an ...

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  3. Atoms of the following group possess the highest ionisaiton energies

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  4. Atoms of the following group possess the lowest ionisation energies

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  5. Configuration of the element with the highest ionisation energy is

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  6. When Lithium vapour is taken in a discharge tube and the potential dif...

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  7. Which of the following transition involves maximum amount of energy?

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  8. The first ionisation potential is maximum for

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  9. The lowest first ionization energy would be associated with which of t...

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  10. The maximum tendency to form tripositive ion is for the element with t...

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  11. As one moves along a given row in the periodic table, ionisation energ...

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  12. First four ionisation energy values of an element are 191, 578, 872 an...

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  13. Ionisation potential values of Li, Be and B are respectively in kJ "mo...

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  14. Elements X, Y and Z have atomic numbers 19, 37 and 55 respectively. Wh...

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  15. Which of the following process refers to ionisation potential ?

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  16. The atomic numbers of vanadium (V), Chromium (Cr), maganese (Mn) and i...

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  17. Which of the following ionization energy values for Calcium show a sud...

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  18. When the screening effect increases, ionisation energy

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  19. With an increase in the extent of penetration of valence electrons, io...

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  20. The group of elements with highest second ionisation energy is

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