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| धातु आयन | रंग |
|---|---|
| $A. V^{4+}$ | $I. \text{रंगहीन}$ |
| $B. Ti^{3+}$ | $II. \text{बैंगनी}$ |
| $C. Ti^{4+}$ | $III. \text{हरा}$ |
| $D. Ni^{2+}$ | $IV. \text{नीला}$ |
| $V. \text{पीला}$ |
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