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Generally transition elements form colou...

Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state -

A

`Ag_(2)SO_(4)`

B

`CuF_(2)`

C

`ZnF_(2)`

D

`Cu_(2)Cl_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`CuF_(2)` will be coloured because `Cu^(2+)(3d^(9)4s^(0))` has unpaired electron in 3d - orbital.
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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -SOLVED NCERT EXEMPLAR PROBLEMS (Multiple Choice Question)
  1. The electronic configuration of Cu (II) is 3d^(9) whereas that of Cu (...

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  2. Metallic radii of some transition elements are given below. Which of t...

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  3. Generally transition elements form coloured salts due to the presence ...

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  4. On addition of small amount of KMnO(4) to concentrated H(2)SO(4), a gr...

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  5. The magnetic nature of elements depends on the presence of unpaired el...

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  6. Which of the following oxidation states is common for all lanthanoids ...

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  7. Which of the following reactions are disproportionation reactions - ...

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  8. When KMnO(4) solution is added to oxalic acid solution, the decolouris...

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  9. There are 14 elements in actinoid series. Which of the following eleme...

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  10. KMnO(4) acts as an oxidising agent in acidic medium. The number of mol...

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  11. Which of the following is amphoteric oxide ? Mn(2)O(7), CrO(3), Cr(2)O...

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  12. Gadolinium belongs to 4f - series. It's atomic number is 64. Which of ...

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  13. Interstitial compounds are formed when small atoms are trapped inside ...

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  14. The magnetic moment is associated with its spin angular momentum and o...

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  15. KMnO(4) acts as an oxidising agent in alkaline medium. When alkaline K...

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  16. Which of the following statements is not correct -

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  17. When acidified K(2)Cr(2)O(7) solution is added to solution of Sn^(2+) ...

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  18. Highest oxidation state of manganese in fluoride is + 4 (MnF(4)) but h...

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  19. Although zirconium belongs to 4d transition series and hafnium to 5d t...

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  20. Why is HCl not used to make the medium acidic in oxidation reactions o...

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