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| ધાતુ આયન | રંગ |
|---|---|
| $A. V^{4+}$ | $I. \text{રંગહીન}$ |
| $B. Ti^{3+}$ | $II. \text{જાંબલી}$ |
| $C. Ti^{4+}$ | $III. \text{લીલો}$ |
| $D. Ni^{2+}$ | $IV. \text{વાદળી}$ |
| $V. \text{પીળો}$ |
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