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What is the correct order of radii of Fe...

What is the correct order of radii of `Fe^(2+), Fe^(3+)` and neutral Fe atom. Why? 

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AAKASH SERIES-PERIODIC TABLE-EXERCISE - 2.1.4
  1. What is periodicity? What is the cause for it?

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  2. What are atomic and ionic radii? How do they vary in a period and in a...

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  3. Define and explain the terms: covalentradius, crystal radius and van d...

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  4. Define first and second ionisation potentials. Why second ionisation p...

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  5. Discuss the factors influencing ionisation potential values of element...

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  6. What is electron affinity? Why the electron affinity of fluorine is le...

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  7. Define electronegativity. How is itcalculated based on Pauling's and M...

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  8. Write the important applications of electronegativity.

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  9. What is valency? How is it related to the reference elements?

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  10. Discuss the variation in the following properties in group IIA and thi...

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  11. How do the following vary along periods and groups? (a) ionic radii,...

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  12. Discuss the variation of ionisation potentials of second period elemen...

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  13. As the atomic number increases atomic size increases in a group, while...

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  14. Radius of cation is less than that of parental atom, but radius of ani...

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  15. What is lanthanide contraction? Give one of its consequences.

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  16. What is shielding effect? How does it effect ionisation potential valu...

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  17. Explain, the following: (i) 'B' has less ionisation potential than ‘...

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  18. What is the correct order of radii of Fe^(2+), Fe^(3+) and neutral Fe ...

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  19. Write the differences between electron affinity and electronegativity.

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  20. Electron gain enthalpy of nitrogen and neon are very less in the secon...

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