Duration: 6:34

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Select the correct order:
(a) Bond strength \( \quad: \mathrm{NO}^{-}\mathrm{NO}\mathrm{NO}^{+} \)
(b) \( \mathrm{N}-\mathrm{O} \) bond angle : \( : \mathrm{NO}_{2}^{+}\mathrm{NO}_{2}^{-}\mathrm{NO}_{3}^{-} \)
(c) Thermal stability : LiF \( \mathrm{NaF}\mathrm{KF}\mathrm{RbF}\mathrm{CsF} \)
(d) Hydrated size \( \quad: \mathrm{Be}^{2+}(\mathrm{aq})\mathrm{Mg}^{2+} \) (aq)
\( \mathrm{Ca}^{2+}(\mathrm{aq})\mathrm{Sr}^{2+} \) (aq) \( \mathrm{Ba}^{2+} \) (aq)
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