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Ionic radii (Å) of N^(3-),O^(2-) and F^(...

Ionic radii (Å) of `N^(3-),O^(2-) and F^(-)` are -

A

1.71, 1.40 and 1.36

B

1.71, 1.36 and 1.40

C

1.36, 1.40 and 1.71

D

1.36, 1.71 and 1.40

Text Solution

Verified by Experts

The correct Answer is:
A
`N^(3-),O^(2-) and F^(-)` are isoelectronic species. The ionic radii of isoelectronic ions increase with the decrease in the magnitude of nuclear charge. Thereofre, the ionic radii (in Å) of `N^(3-),O^(2-) and F^(-)` are 1.71, 1.40 and 1.36 respectively.
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CHHAYA PUBLICATION-CLASSIFICATION OF ELEMENTS & PERIODICITY IN PROPERTIES-ENTRANCE QUESTION BANK
  1. Which of the given represents correct order of incrasing first ionisat...

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  2. Which one has the highest boiling point-

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  3. Ionic radii (Å) of N^(3-),O^(2-) and F^(-) are -

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  4. Which of the following atoms ha the highest first ionisation energy-

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  5. The group having isoelectronic species is-

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  6. Both lithium and magnesium displace several similar propertiess due to...

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  7. What is the value of electron-gain enthalpy of Na^(+) if IE(1) of Na=5...

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  8. In which of the following arrangements, given sequence is not accordin...

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  9. Identify the wrong statement among the following-

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  10. Reason of lanthanoid contraction is-

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  11. Be^(2+) is isoelectronic with which of the following ions?

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  12. Which of the following orders of ionic radii is correctly represented ...

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  13. The species Ar, K^(+) and Ca^(2+) contain the same number of electrons...

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  14. Because of lanthanide contraction, which of the following pairs of ele...

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  15. In which of the following options the order of arrangement does not ag...

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  16. The element Z=114 has been discovered recently. It will belong to whic...

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  17. Among CaH(2),BeH(2),BaH(2), the order of ionic character is-

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  18. Which of the following is most acidic?

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  19. The first ionisation enthalpy of Na, Mg and Si are 496, 737, 776 kJ*mo...

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  20. Which is correct regarding size of atom-

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