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Why do transition elements have high val...

Why do transition elements have high value of hydration enthalpy?

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Transition elements have high value of hydration enthalpy due to their small size and higher charge.
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Why do transition elements show variable oxidation state?

Why are transition elements so named ?

Why do the transition element have higher boiling & melting points?

Why do the transition elements exhibit higher enthalpies of atomisation?

Assign reasons for the following : (i) The enthalpies of atomisation of transition elements are high. (ii) The transition metals and many of their compounds act as good catalyst. (iii) From element to element the actinoid contraction is greater than the lanthanoid contraction. (iv) The E^(@) value for the Mn^(3+)//Mn^(2+) couple is much more positive than that for Cr^(3+)//Cr^(2+) . (v) Scandium (Z = 21) does not exhibit variable oxidation states and yet it is regarded as transition element.

Why do radioactive element decay?

Which one of the following transition element has the lowest value of enthalpy of atomization?

Why do transition elements show similarities along the horizontal period ?

Answer the following questions (i) Which element of the first transition series has highest second ionisation enthalpy? (ii) Which element of the first transition series has highest third ionisation enthalpy? (iii) Which element of the first transition series has lowest enthalpy of atomisation? (b) Identify the metal and justify your answer. (i) Carbonyl M(CO)_(5) (ii) MO_(3)F

What are the characteristics of th transition elements and why are they called transition elements? Which of the d-block elements may not be regarded as the transition elements?

ICSE-d- AND- f- BLOCK ELEMENTS-EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Why is electronic configuration 1s^2 2s^2 2p^6 3s^2 3p^6 3d^4 4s^2 n...

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  2. How does the ionic/covalent character of the compounds of a transition...

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  3. Why do transition elements have high value of hydration enthalpy?

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  4. Why Fe^(2+) has smaller radius than Mn^(2+) ?

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  5. Why do most transition metal ions exhibit paramagnetism ?

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  6. How is the magnetic moment of a species related to the number of unpai...

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  7. The electronic configuration of Co^(2+) and Cu^(2+) is d^7 and d^(9) r...

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  8. Which of the following is paramagnetic ? Sc^(3+) (Z=21),Cu^(+)(Z=29)

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  9. Why is Ti^(2+) ion paramagnetic ?

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  10. One unpaired electron in an atom contributes a magnetic moment of 1.1 ...

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  11. Why do transition elements shows variable oxidation states?

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  12. Why are complex ions readily formed when water molecules react with th...

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  13. Arrange the following in increasing order of basic character: MnO, ...

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  14. Arrange the following in increasing order of acidic character: CrO,...

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  15. What happens when KMnO4 is heated ?

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  16. What is Baeyer's reagent ?

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  17. Why is KMnO4 kept in dark bottles ?

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  18. Why is HCl not used to acidify a permanganate solution in volumetric e...

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  19. Why is K(2)Cr(2)O7 generally preferred over Na(2)Cr(2)O(7) , in volume...

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  20. What happens when chromates are kept in acidic solution and dichromate...

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