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Why do transition elements shows variabl...

Why do transition elements shows variable oxidation states?

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The energies `(n-1)d` orbitals and ns orbitals are very close. Hence, electrons from both can participate in bonding.
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Why do transition elements show variable oxidation state?

(a) Why do transition elements show variable oxidation states? (i) Name the element showing maximum number of oxidation states among the first series of transition metals from Sc (Z = 21) to Zn (Z = 30). (ii) Name the element which shows only + 3 oxidation state. (b) What is lanthanoid contraction? Name an important alloy which contains some of the lanthanoid metals.

(a) Describe the general trends in the following properties of the first series of the transition elements: (i) Stability of +2 oxidation state (ii) Formation of oxometal ions (b) Assign reason for each of the following: (i) Transition elements exhibit variable oxidation states. (ii)Transition metal ions are usually coloured

Give reason: (i) Transition metals show variable oxidation states. (ii) Actinoids show wide range of oxidation states.

Give reason for the following : (i) Mn shows the highest oxidation state of +7 with oxygen but with fluorine, it shows the highest oxidation state of +4 (ii) Transition metals show variable oxidation states. (iii) Actinoids show irregularities in their electronic configurations.

Explain the following (a) Zr and Hf exhibit similar properties. (b) Most of the transition elements show large number of oxidation states.

Assign reasons for each of the following (i) Trasitiono elements exhibit variable oxidation sates. (ii) Transition metal ions are usually coloured.

Why do alkali metals not show variable oxidation states ?

Which transition element does not exhibit variable oxidation state?

Which transition elements exhibit +8 oxidation state

RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 1
  1. Why Zinc has lowest melting point in 3d series?

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  2. Assign reasons for the following : (b) The ionization energy of 5d e...

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  3. Why do transition elements shows variable oxidation states?

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  4. What is the most common oxidation state of first transition series?

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  5. Name the three factors which determine the stability of a particular ...

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  6. E(Mn^(3+)//Mn^(2+))^@is highly positive than that of E(Cr^(3+)//Cr^(2+...

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  7. Use the data to answer the following and also justify giving rason: {:...

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

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  9. Why Ti^(+4) complex are diamagnetic?

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

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  11. Explain giving reasons: (i) Transition metals and many of their compou...

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  12. Describe The general characteristics of transition elements with speci...

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  13. Which type of reaction MnO(4)^(2-)show with acid , dilute -alkali or w...

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  14. Why is KMnO4 kept in dark bottles ?

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  15. Why does AgNO(3) produced a black stain on the skin?

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  16. Why is AgBr used in photography ?

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  17. Why it is not advisable to dissolve KMnO(4) in cold and concentrated H...

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  18. What happen when: (a) Green Vitriol is strongly heated. , (b) FeSO(4)...

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  19. State true or false: Reaction of K(2)Cr(2)O(7) with cold and concentra...

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  20. Write balanced chemical equations for: (i) Mixture of K(2)Cr(2)O(7) ...

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