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Question
Which one of the following ions is coloured?
Options
Se3+
Ti4+
Zn2+
V2+
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Solution
V2+
Explanation:
The V2+ ion has an unpaired electron while the others have paired electrons.
So, `sqrt(2+)` is a coloured ion.
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RELATED QUESTIONS
ln which pair highest oxidation states of transition metals are found:
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| -0.91 | -1.18 | -0.44 | -0.28 | -0.25 | -0.34 |
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| List - I | List - II | ||
| (A) | [Fe(CN)6]3− | (i) | 5.92 BM |
| (B) | [Fe(H2O)6]3+ | (ii) | 0 BM |
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| Cr2+/Cr | −0.9 V |
| Mn2+/Mn | −1.2 V |
| Fe2+/Fe | −0.4 V |
| Cr3/Cr2+ | −0.4 V |
| Mn3+/Mn2+ | +1.5 V |
| Fe3+/Fe2+ | +0.8 V |
Use this data to comment upon:
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