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The decreasing order of the ionization p...

The decreasing order of the ionization potential of the following elements is

A

`Al gt Ga gt ln gt Tl`

B

`Al gt Ga gt Tl gt ln`

C

`Al ~~ Ga gt ln gt Tl`

D

`Al ~~ Ga gt Tl gt ln`

Text Solution

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The correct Answer is:
D
Barring few exceptions, ionization potential decreases down the group.
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DISHA PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-Exercise -1 :Concept Builder (Topic 2)
  1. Which of the following transitions involves maximum amount of energy?

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  2. Ionisation energy decreases down the group due to

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  3. Which one has least ionisation potential?

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  4. Na^(+), Mg^(2+), Al^(3+), and Si^(4+) are isoelectronic ions. Their io...

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  5. Ionic radii are

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  6. Which one of the following ions has the highest value of ionic radius?

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  7. Atomic radil of fluorine and neon in Angstrom units are respectively ...

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  8. The screening effect of inner electrons of an atom can cause

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  9. The second ionization potential of elements is invariably higher than ...

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  10. The pair of elements having approximately equal ionisation potential i...

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  11. Which of the following option is incorrect with respect to ionic radii...

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  12. Which of the following element has maximum, first ionisation potential...

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  13. The radii of F,F^(-),O and O^(-2) are in the order of

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  14. Which of the following has same size?

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  15. The correct decreasing order of first ionisation enthalpies of five el...

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  16. The correct order of second ionisation potential of C, N, O and F is:

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  17. Which of the following arrangements represents the increasing order (s...

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  18. The atomic sizes are not significantly different for the series of ele...

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  19. The correct order of the ionic radii of the ions is

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

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