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Write the electronic configurations of t...

Write the electronic configurations of the following ions.
(i). `Mn^(2+)`
(ii). `Fe^(3+)`
(iii) `Ni^(2+)` ltBrgt (iv). `Cr^(3+)`.

Text Solution

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(i) `[Ar]3d^(5)4s^(0)`
(ii) `[Ar]3d^(5)4s^(0)`
(iii) `[Ar]3d^(8)4s^(0)`
(iv) `[Ar]3d^(3)4s^(0)`.
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RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 1
  1. What is the general electronic configuration of transition elements

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  2. Write the electronic configurations of the following ions. (i). Mn^(...

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  3. Name the d-block element which do not have partially filled d-orbitals...

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  4. What is meant by the 'lanthanide contraction'? Mention one important f...

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  5. Name the (i) lightest and the (ii) heaviest element (in terms of densi...

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  6. Which element among d-block element has(i) the lowest melting point an...

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  7. Why Zinc has lowest melting point in 3d series?

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  8. Why are the ionisation energies of 5d elements greater than 3d element...

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  9. Why do transition elements show variable oxidation state?

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  10. What is the most common oxidation state of first transtion series.?

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  11. Name the three factors which determine the stability of a particular o...

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  12. Why is the E^(Theta) value for the Mn^(3+)//Mn^(2+) couple much postiv...

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  13. {:("Element",Cr,Mn,Fe),(E^(underset(-)(o))(M^(2+)//M),-0.90V,-1.18V,-0...

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  14. Which of the following ions would form (i) coloured and (ii) colourles...

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  15. Why Ti^(+4) complexes are diamagnetic?

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  16. A substance is found to have a magnetic moments of 3.9BM.How many unpa...

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  17. Explain giving reason: (a) Transition metals and many of their compo...

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  18. Describe the general characteristics of transition elements with speci...

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  19. Which type of reaction MnO(4)^(2-) shows with aid, dilute-alkali or wa...

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  20. Why KMnO(4) is stored in dark bottle and water happens to it's aidic s...

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