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Zirconium (Zr) belongs to. ‘4d and Hafni...

 Zirconium (Zr) belongs to. ‘4d` and Hafnium (Hf) belongs to `5d` transition series: It is difficult to separate them. Explain.

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Due to lanthanoid contraction, the atomic radii of Zr and Hf are nearly the same. They also have similar outer electronic configuration. So Zr and Hf Sare very closely related in properties. So they occur together and it is difficult to separate them.
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A N EXCEL PUBLICATION-D AND F - BLOCK ELEMENTS-QUESTION BANK
  1. Which of the following oxidation state is common for lanthanides?

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  2. Draw the structures of chromate and dichromate ions'.

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  3. Zirconium (Zr) belongs to. ‘4d and Hafnium (Hf) belongs to 5d transiti...

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  4. Which of the following odixation state is not shown by Manganese?

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  5. Potassium permanganate and potassium dichromate are two transition met...

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  6. Potassium permanganate (KMnO4) is a strong oxidizing agent. Write any ...

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  7. Transition elements are d- block elements Write any four characteristi...

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  8. Transition elements are d - block elements and inner transition elemen...

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  9. Transition elements are d - block elements and inner transition elemen...

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  10. Transition elements are d - block elements and inner transition elemen...

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  11. Transition elements are d- block elements Write any four characteristi...

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  12. transition elements are 'd' block elements. Cr^(2+) and Mn^(3+) have d...

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  13. Which of the following is not a lanthanoid element?

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  14. Zr and Hf are having similar chemical properties. This is due to.

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  15. Magnetic moments arise due to the presence of unpaired electrons’ Calc...

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  16. Transition metal ions are generally coloured. Why?

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  17. A transition element is defined as one which has incompletely filled d...

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  18. Silver atom has completely-filled d-orbital (4d^105 s^1) in its groun...

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  19. Why are d block elements called transition elements?

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  20. Transition elements generally have high enthalpy of atomisation and th...

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