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प्रश्न
Why are all copper halides known except that copper iodide?
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उत्तर
Cu2+ oxidizes iodide ion to iodine.
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संबंधित प्रश्न
Give reasons:
Transition metals show variable oxidation states.
|
`E_((M^(2+)/M)` |
Cr | Mn | Fe | Co | Ni | Cu |
| -0.91 | -1.18 | -0.44 | -0.28 | -0.25 | -0.34 |
From the given data of E0 values, answer the following questions :
(1) Why is `E_(((Cu^(2+))/(Cu)))` value exceptionally positive
(2) Why is `E_(((Mn^(2+))/(Mn)))` value is highly negative as compared to other elements
(3) Which is the stronger reducing agents Cr2+ or Fe2+ ? Give Reason.
Out of Mn3+ and Cr3+, which is more paramagnetic and why ?
(Atomic nos. : Mn = 25, Cr = 24)
Account for the following :
Ti4+ is colourless whereas V4+ is coloured in an aqueous solutions.
Explain why Zn2+ salts are white whereas Cu2+ salts are coloured.
Maximum magnetic moment is shown by ____________.
Ionisation enthalpies of Ce, Pr and Nd are higher than Th, Pa and U. Why?
Assertion: Separation of \[\ce{Zr}\] and \[\ce{Hf}\] is difficult.
Reason: Because \[\ce{Zr}\] and \[\ce{Hf}\] lie in the same group of the periodic table.
Catalytic hydrogenation of benzene gives
Which of the following transition metals shows +1 and +2 oxidation states?
