Select the correct order of ionic radii: (a) \( \mathrm{O}^{2-}\mathrm{S}^{2-}\mathrm{Se}^{2-}\m...

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Select the correct order of ionic radii:
(a) \( \mathrm{O}^{2-}\mathrm{S}^{2-}\mathrm{Se}^{2-}\mathrm{Te}^{2-} \)
(b) \( \mathrm{Te}^{2-}\mathrm{S}^{2-}\mathrm{O}^{2-}\mathrm{Se}^{2-} \)
(c) \( \mathrm{O}^{2-}\mathrm{Te}^{2-}\mathrm{S}^{2-}\mathrm{Se}^{2-} \)
(d) \( \mathrm{Te}^{2-}\mathrm{Se}^{2-}\mathrm{S}^{2-}\mathrm{O}^{2-} \)
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