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The first ionisation potential of Al is ...

The first ionisation potential of `Al` is smaller than that of `Mg` because:

A

the atomic size of `Al gt Mg`

B

the atomic size of `Al lt Mg`

C

`Al` has one unpaired electron in `3p-`orbital

D

`Mg` has incompletely filled `3s-`orbital

Text Solution

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The correct Answer is:
C
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GRB PUBLICATION-PERIODIC TABLE-C.Ionisation Energy
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  4. Which of the following gaseous atoms has the highest value of ionisati...

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  5. The first ionisation potential of Na,Mg,Al and Si are in the order

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  6. The first ionisation potential in electron volts of nitrogen and oxyge...

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  7. Which of the following relation is correct with respect first (I) and ...

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  8. The ionization energy will be higher when the electron is removed from...

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  9. Which of the following isoelectronic ion has the lowest 1st ionization...

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  10. A large difference between the third and fourth ionization energies in...

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  11. The second ionisation enthalpies of elements are always higher than th...

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  12. Which of the following is the correct order of ionisation energy?

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  13. The peaks in ionisation potential curves are occupied by

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  14. Which metal is the most reactive?

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  15. The five successive energies of an element are 800, 2427, 3658, 25024 ...

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  16. Which has maximum first ionization potential?

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  17. Values of IE(1),IE(2) and IE(3) of an element are 9.31, 18.21 and 553....

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  18. Which of the following is the correct order of ionisation energy? (1...

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  19. The incorrect statement Among the following is A)The first ionisation...

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  20. The set representing the correct order of the first ionisation potenti...

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