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Q.26 Match the characteristics mentioned in column II with
\( \mathrm{P} \) the process in column I.

WV
Column-I Column-II
(a) \( \mathrm{O}(\mathrm{g})+\mathrm{e}^{-} \longrightarrow \mathrm{O}^{-}(\mathrm{g}) \quad \) (p) Positive Electron gain enthalpy
(b) \( \mathrm{O}^{-}(\mathrm{g})+\mathrm{e}^{-} \longrightarrow \mathrm{O}^{2-}(\mathrm{g}) \quad \) (q) Negative Electron gain enthalpy
(c) \( \mathrm{Na}^{-}(\mathrm{g}) \longrightarrow \mathrm{Na}(\mathrm{g})+\mathrm{e}^{-} \)(r) Exothermic
(d) \( \mathrm{Mg}^{+}(\mathrm{g})+\mathrm{e}^{-} \longrightarrow \mathrm{Mg}(\mathrm{g}) \) (s) Endothermic
(A) (a) \( \rightarrow \) q, s; (b) \( \rightarrow \) p,r; (c) \( \rightarrow \) s; (d) \( \rightarrow \) q,r
(B) (a) \( \rightarrow \) q,r; (b) \( \rightarrow \mathrm{p}, \mathrm{s} \); (c) \( \rightarrow \) q; (d) \( \rightarrow \) q, s
(C) (a) \( \rightarrow \mathrm{p}, \mathrm{r} \); (b) \( \rightarrow \mathrm{s}, \mathrm{r} \); (c) \( \rightarrow \mathrm{s} \); (d) \( \rightarrow \mathrm{q}, \mathrm{r} \)
(D) (a) \( \rightarrow \) q,r; (b) \( \rightarrow \) p,s; (c) \( \rightarrow \) s; (d) \( \rightarrow \) q,r
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