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From the given set of species, point out the species from each set having highest \( Z_{\text {eff }} \).
(I) \( \mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}^{+} \)
(II) \( \mathrm{Li}, \mathrm{Be}, \mathrm{Na} \)
(III)He, \( \mathrm{Li}^{+}, \mathrm{H}^{-} \)
\( \begin{array}{llll} & \text { I } & \text { II } & \text { III } \\ \text { (a) } \mathrm{Na}^{+} & \mathrm{Be} & \mathrm{Li}^{+} \\ \text {(b) } \mathrm{O}^{2-} & \mathrm{Li} & \mathrm{H}^{-} \\ \text {(c) } \mathrm{F}^{-} & \mathrm{Na} & \mathrm{He} \\ \text { (d) } \mathrm{Na}^{+} & \mathrm{Be} & \mathrm{He}\end{array} \)
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