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| વિભાગ-$I$ | વિભાગ-$II$ |
| $(1) \ \text{Cr}$ | $(A) \ [\text{Ar}] \ 3d^8 4s^0$ |
| $(2) \ \text{Fe}^{2+}$ | $(B) \ [\text{Ar}] \ 3d^{10} 4s^1$ |
| $(3) \ \text{Ni}^{2+}$ | $(C) \ [\text{Ar}] \ 3d^6 4s^0$ |
| $(4) \ \text{Cu}$ | $(D) \ [\text{Ar}] \ 3d^5 4s^1$ |
| $(E) \ [\text{Ar}] \ 3d^6 4s^2$ |
| 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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