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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 the solid state ?

A

`Ag_2SO_4`

B

`CuF_2`

C

`ZnF_2`

D

`CuCl_2`

Text Solution

Verified by Experts

The correct Answer is:
B
`Ag_2SO_4 to Ag^+(4d^10)`- colourless
`CuF_2 to Cu^(2+)(3d^9)`- coloured
`ZnF_2toZn^(2+)(3d^10)`-colourless
`CuCl_2to Cu^(+)(3d^10)`-colourless
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NCERT FINGERTIPS ENGLISH-THE D- AND F- BLOCK ELEMENTS -EXEMPLER PROBLEMS
  1. Electronic confriguration of a transition element X in +3 oxidation st...

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  2. The electronic configurationo of Cu(II) is 3d^(9) whereas that of Cu(I...

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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 state si 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 decolouri...

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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 an amphoteric oxide?

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  12. Gadolinium belongsd to 4f series. It's atomic number is 64. which of t...

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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 on 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 Sn^(2+) salts then S...

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  18. Higher oxidation state of manganese in fluoride is +4 (MnF(4)) but hig...

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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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