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The correct decreasing order of first io...

The correct decreasing order of first ionisation enthalpies of five elements of second period is

A

`Be gt B gt C gt N gt F`

B

`N gt F gt C gt B gt Be`

C

`F gt C gt Ngt B gt be`

D

`N gt F gt B gt C gt Be`

Text Solution

Verified by Experts

The correct Answer is:
C
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MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -COMPETITION FILE (OBJECTIVE TYPE QUESTIONS (B)) (MCQs)
  1. An element belongs to group 15 and third period of the periodic table....

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  2. Whicn one fo the following has the lowest ionisation enthalpy ?

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

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  4. The correct order of decreasing electronegativity values among the ele...

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  5. Considering the elements B, C, N, F and Si, the correct order of their...

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  6. the correct order of electron gain enthalpy with negative sign of F,Cl...

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  7. Among the following, the element with highest ionisation potential is

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  8. The correct order of ionisation energy of C, N, O and F is

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  9. The correct order of electronegativities of N,O, F and P is

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  10. The ionic radii of N^(3-) O^(2-), F^-, Na^+ follows the order

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  11. The increasing order of the ionic radii of the given isoelectronic spe...

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  12. Which one of the following sets of ions represents the collection of i...

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  13. Which of the followng noble gases has the highest positive electron ga...

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

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  15. The first ionisation potential of Na is 5.1eV. The value of eectrons g...

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  16. The successive ionization energies (in kJ/mol) for an element are show...

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

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  18. The ionic radii of N^(3-), O^(2-) and F^(-) are respectively given by:

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  19. An element X belongs to the fourth period and the fifteenth group of t...

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

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