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Explain the following observation : Amon...

Explain the following observation : Among the divalent cations in the first series of transition elements, manganese exhibits the maximum paramagnetism .

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Complete the following chemical equation : Cr2O7^(2-) (aq)+ Fe^(2+) (a...

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  2. Explain the following observation : La^(3+) (Z =57) and Lu^(3+) (Z = 7...

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  3. Explain the following observation : Among the divalent cations in the ...

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  4. Explain the following observation : Cu^+ ion is not known in aqueous s...

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  5. Give reason for the following : Mn^(3+) is a good oxidising agent.

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  6. Give reason for the following : E(M^(2+)|M)^(@)values are not regular ...

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  7. Express 2138 in roman numbers.

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  8. Express 2150 in roman numbers.

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  9. What is gypsum?

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  10. Express 2151 in roman numbers.

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  11. Why do transition elements show variable oxidation states ? Name the e...

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  12. What is lanthanoid contraction ? Name an important alloy which contain...

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  13. Complete the following equation : Cr2O7^(2-)+2OH^(-) rarr

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  14. Complete the following equation : MnO4^(-)+ 4H^(+)+ 3e^(-) rarr

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  15. Account for the following : Zn is not considered as a transition elem...

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  16. Express 2152 in roman numbers.

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  17. Express 2153 in roman numbers.

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  18. Express 2155 in roman numbers.

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  19. Name a member of the lanthanoid series which is well known to exhibit ...

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  20. Complete the following equation : MnO4^(-)+ 8H^(+)+ 5e^(-) rarr

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