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How many are the number of unpaired elec...

How many are the number of unpaired electron in ferrous ion ?

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Electronic configuration `Fe^(2+) : 1s^2 2s^2 2 p^ 3s^2 3p^6 3d^6 `. Number of unpaired electrons =4
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ACCURATE PUBLICATION-D & F BLOCK ELEMENTS -1 OR 2 MARK QUESTIONS
  1. What is the oxidation state of Cr in K2Cr2O7?

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  2. Why +3 oxidation state of Fe (Z = 26) is more stable than its +2 oxida...

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  3. How many are the number of unpaired electron in ferrous ion ?

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  4. What is the cause of Paramagnetism of compounds of transition elements...

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  5. Name two alloys of copper?

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  6. Why does Vanadium Pentaoxide act as a catalyst?

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  7. Name the catalyst of Vanadium used for oxidation of SO2 to SO3 in cont...

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  8. Why Cr is used for electroplating iron ?

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  9. Draw the structure of chromate ion.

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  10. Write the general electronic configuration of lanthanoids.

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  11. Do lanthanoid and actinoids belong to d-or f-block elements ?

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  12. Write the general electronic configuration of f-block elements.

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  13. What is the general electronic configuration of actinoids?

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  14. Fill in the blanks with suitable words : In water , the proportion of ...

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  15. What is the maximum oxidation state shown by actinoids?

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  16. Why Zr and Hf show similar chemical properties ?

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  17. How will each of the following respond to magnetic field and why ? Co^...

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  18. Out of Co^(2+), Zn^(2+) and Cu^+(2+) which will give aqueous coloured ...

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  19. Name a transition element which does not exhibit variable oxidation st...

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  20. Write the formula of mangnate ion and dichromate ion.

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