MCQ
The species having pyramidal shape is
- ✓$\mathrm{SO}_3$
- B$\mathrm{BrF}_3$
- C$\mathrm{SiO}_3^{2-}$
- D$\mathrm{OSF}_2$

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${N_{2(g)}} + 3{H_{2(g)}} \rightleftharpoons \,2N{H_{3(g)}}$ at equilibrium at constant volume will lead to
${{O}_{(g)}}+{{e}^{-}}=O_{(g)}^{-}\Delta {{H}^{o}}=-142\ kJ\,mo{{l}^{-1}}$
$O_{(g)}^{-}+{{e}^{-}}=O_{(g)}^{2-}\Delta {{H}^{o}}=844\ kJ\,mo{{l}^{-1}}$
