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Which one of the following ions is colou...

Which one of the following ions is colourless ?

A

`Cu^(+)`

B

`Co^(2+)`

C

`Ni^(2+)`

D

`Fe^(3+)`

Text Solution

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The correct Answer is:
A
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NIKITA PUBLICATION-D-AND F-BLOCK ELEMENTS-MULTIPLE CHOICE QUESTIONS
  1. The number of d-electrons retained in Fe^(2+) (At. No. Fe=26) ions are...

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  2. The colour of transition metal ion is attributed to:

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  3. Which one of the following ions is colourless ?

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  4. Which of the following transition metal ion will have magnetic moment ...

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  5. If n is the number of unpaired electrons, the magnetic moment (in BM) ...

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  6. Which is the set of non stoichiometric compounds

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  7. Which of the following has highest ionisation energy ?

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  8. A transition element X has a configuration [Ar] 3d^(4) in its + 3 oxi...

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  9. Fe^(+3)

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  10. Which of the following is not correct about transition metals

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  11. Ground state electronic configuration of Cr atom is :

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  12. The aqueous solution of the following salts will be coloured in the ca...

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  13. The no. of unpaired electrons in Mn^(7+) ions (At. No of Mn =25) is

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  14. The first and last element of the second transition series respectivel...

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  15. The highest oxidation state of Mn is shown by

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  16. Number of unpaired electrons present in [Ni(H(2)O)(6)]^(2+)

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  17. Zinc does not show variable valency Because of:

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  18. Common oxidation state of Scandium, a transition element is /are (At. ...

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  19. Oxidation number of osmium (Os) in OsO(4) is

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  20. The purple colour of [Ti (H(2)O)(6)]^(+3) ion is due to

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