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Give reasons for the following: (i) ...

Give reasons for the following:
(i) Transition metals form alloys.
(ii) `Mn_2O_3` is basic whereas `Mn_2O_7` is acidic.
(iii) `Eu^(2+)` is a strong reducing agent.

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(a) `Eu^(2+)`can lose electron to form more stable `Eu^(3+)` Property )
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PRADEEP-D- AND F-BLOCK ELEMENTS-ADDITIONAL QUESTIONS (SHORT ANSWER QUESTIONS )
  1. Name the gas evolved when concentrated HCI is added to powdered potass...

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  2. Write an equation in ionic form to represent the oxidizing actionof Cr...

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  3. Why Mn^(2+) compounds are more stable than Fe^(2+) compounds towards o...

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  4. Give the preparation of potassium permanganate from pyrolusite ore.

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  5. What happens when (i) KMnO(4) is heated (ii) K(2)Cr(2)O(7)is heated.

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  6. What happens when acidified KMnO(4)reacts with (i) H(2)S (ii)Oxalic ac...

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  7. Describe the oxidising property of KMnO(4) in neutral or faintly alkal...

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  8. What chemical changes take place when (i) MnO(2) is fused with KOH in ...

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  9. Write ionic equations for the conversion of (a)manganate to permanga...

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  10. Write chemical equations for the following reactions: (a) Oxidatio...

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  11. Complete the following chemical equations : (i) 8MnO(4)^(-)+3S(2)O(3...

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  12. What is meant by disproporitonation of an oxidation state? Give an exa...

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  13. What happens when (i) (NH(4))(2) Cr(2) O(7) is heated ? (ii) H(3)PO...

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  14. Complete the following equations : (i) 2MnO(4)^(-) + 16 H^(+) + 5S^...

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  15. What are inner-transition elements? Decide which of the following atom...

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  16. What is lanthanoid contraction? What is its cause and what ar its cons...

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  17. Misch metal is

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  18. How would you account for the following : (i) Many of the transition...

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  19. (a) How would you account for the following : (i) Actinoids contract...

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  20. Give reasons for the following: (i) Transition metals form alloys....

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