9177441
| Pregunta | Respuesta |
| \[Ti^{3+}\] | Purple |
| \[V^{2+}\] | Purple |
| \[V^{3+}\] | Green |
| \[V^{4+}\] | Blue |
| \[V^{5+}\] | Yellow |
| \[Cr^{2+}\] | Blue |
| \[Cr^{3+}\] | Green |
| \[Cr^{6+}\] | Orange |
| \[Mn^{2+}\] | Pink |
| \[Mn^{4+}\] | Brown |
| \[Mn^{6+}\] | Green |
| \[Mn^{7+}\] | Purple |
| \[Fe^{2+}\] | Pale green |
| \[Fe^{3+}\] | Pale Yellow |
| \[Co^{2+}\] | Bright pink |
| \[Co^{3+}\] | Green |
| \[Ni^{2+}\] | Green |
| \[Cu^{2+}\] | Blue |
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