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Why first ionisation potential of alumin...

Why first ionisation potential of aluminium is less than that of magnesium? 

A

Aluminium atom is very large when compared of Mg

B

Aluminium has a stable electronic configuration

C

Magnesium has a stable electronic configuration

D

The electrons affinity of Magnesium is positive (energy is absorbed)

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The correct Answer is:
C
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AAKASH SERIES-PERIODIC CLASSIFICATION-OBJECTIVE EXERCISE - 1 (IONISATION POTENTIAL)
  1. How many ionisation energies can carbon have ? Electron configuration ...

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  2. Why first ionisation potential of aluminium is less than that of magne...

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  3. Electrons with the highest penetrating power are

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  4. The elements that possess the lowest ionisation energy among the follo...

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  5. The species with largest ionisation potential

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  6. The first ionisation potential is maximum for

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

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

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

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

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

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

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  13. The first ionisation potential is maximum for

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

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

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

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

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

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

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

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