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When Lithium vapour is taken in a discha...

When Lithium vapour is taken in a discharge tube and the potential difference between the electrodes is 5.4 ev, there is a sudden increase in the flow of current. The ionisation energy of Lithium is

A

54 ev

B

`520 kJ mol^(-1)`

C

`54 kJ "atom"^(-1)`

D

`5.4 ev "atom"^(-1)`

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Verified by Experts

The correct Answer is:
D
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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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