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Out of the following which one has more ...

Out of the following which one has more number of unpaired electrons ?
`Zn,Fe^(2+),Ni^(3+),Cu^(+)`

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SHARAM PUBLICATION-D AND F BLOCK ELEMENTS-EXERCISE
  1. Why Fe^3+ is more stable than Fe^2+ ?

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  2. Why are scandium salts colourless ?

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  3. Out of the following which one has more number of unpaired electrons ?...

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  4. Why enthalpy of atomisation Zn is the lowest in the first transition s...

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  5. Between Sc^(3+) and Cr^(3+) ion which will give colourless compound.

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  6. What is the general electronic configuration of d-block elements ?

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  7. Which metals form the alloy brass ?

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  8. When Ethylene reacts with alkaline solution of KMnO4 a dihydric alcoho...

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  9. What are alloys? Name an important alloy which contains some of the la...

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  10. Write the formula of one complex ion of Cu and Ni.

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  11. Why do transition elements exhibit variable oxidation states ?

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  12. Fill in the blanks : The first transition series starts with the eleme...

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  13. Fill in the blanks : The only metal which has a positive standard redu...

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  14. Fill in the blanks : The transition metals in which vacant spaces are ...

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  15. Fill in the blanks : f- block elements are known as ……………

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  16. Fill in the blanks :Philosopher's Wool is the name of the compound ………...

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  17. In 1st row transition series the highest oxidation number is shown by

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  18. Fill in the blanks :The reaction in which the same substance undergoes...

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  19. Name the metal present in haemoglobin

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  20. Fill in the blanks :The d- block elements are known as …………

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