Question
Which of the following pairs of ions is colourless?(a) $\mathrm{Ti}^{3+}, \mathrm{Cu}^{2+}$(b) $\mathrm{Sc}^{3+}, \mathrm{Zn}^{2+}$(c) $\mathrm{Co}^{2+}, \mathrm{Fe}^{3+}$(d) $\mathrm{Ni}^{2+}, \mathrm{V}^{3+}$
Step 1
When these ions absorb light, the unpaired electrons get excited and jump to a higher energy level. The wavelength of the absorbed light determines the color of the ion. Show more…
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