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What do you understand by isoelectronic ...

What do you understand by isoelectronic species? Name a species that will be isoelectronic with this of the following atoms or ions:
(i) `F^-` (ii) Ar (iii) `Mg^(2+)` (iv) `Rb^+`

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PATHFINDER-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTION BANK
  1. Select from each group of the species which has the smallest radius st...

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  2. Mg^(2+) is smaller than O^(2-) in size though both have same electroni...

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  3. What do you understand by isoelectronic species? Name a species that w...

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  4. Energy of an electron in the ground state of the hydrogen atom is-2.18...

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  5. Which of the following order is correct of reducing strength-

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  6. From each set choose the atom which has the largest ionization enthalp...

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  7. From each set choose the atom which has the largest ionization enthalp...

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  8. First and second ionisation energies of magnesium are 7.646 ev and 15....

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  9. M(g) rarr M^+ (g) +e^- : DeltaH =100eV M(g) rarr M^(2+) (g) +e^- : D...

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  10. Consider the elements N, P, O, S and arrange them in order of increasi...

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  11. Why do halogens have high electron gain enthalpies (-DeltaH)?

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  12. Which will have the maximum value of electron affinity O^x ,O^y ,O^z? ...

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  13. The amount of energy when million atoms of iodine are completely conve...

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  14. Account for the large decreases in electron affinity between Li and Be...

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  15. The first ionisation enthalpy values of third period elements Na , Mg ...

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  16. Which of the following will have the most negative electron gain entha...

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  17. Give the correct order of electronegativity of central atom in followi...

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  18. Which of the following compound has highest value of bond length-

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  19. The electronegativities of F and H are 4 and 2.1 respectively . The pe...

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  20. Which of the following order is correct for acidic property:

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