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Among the following, the third ionisatio...

Among the following, the third ionisation energy is highest for

A

Magnesium

B

Boron

C

Beryllium

D

Aluminium

Text Solution

Verified by Experts

The correct Answer is:
C
both Mg and Be have two valence electrons therefore third ionization energy of each atom is the highest .Since atomic size of Be is higher than that of Mg .Thus options ( c) is correct.
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PRADEEP-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -Competition Focus (Jee Main and Advanced / Medical Entrance ) ( Multiple Choice Question I )
  1. The correct order of ionisation energy of C, N, O and F is

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  2. Which of the following orders about ionization energy is correct...

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  3. Among the following, the third ionisation energy is highest for

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  4. Which of the element is expected to have lowest first ionisation entha...

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  5. Which of the following atoms has the highest first ionisation energy ?

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  6. Generally, the first ionisation energy increases along a period. But t...

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

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  8. Which of the following represents the correct order of increasing firs...

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  9. Screening effect is not observed in :

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  10. In which case, effective nuclear charge is minimum ?

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  11. The effective nuclear charge of an element with three valence electron...

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  12. which of the following configurations represents atoms of the elements...

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  13. Which electronic configuration of an element has abnormally high diffe...

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

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  15. For one of the element various successive ionization enthalpies ...

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  16. The following table shows the successive molar ionization energ...

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  17. One mole of magnesium in the vapor state absored 1200 kJ mol^(-1) of e...

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  18. Amongest Be, B, Mg and Al, the second ionization potential is maximum ...

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  19. The second ionization energies of Li, Be, B and C are in the order

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  20. Which of the following processes involves absorption of energy?

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