MCQ
The diamagnetic species is
- A$[Co(H_2O)_6]^{2+}$
- B$[Ni(H_2O)_6)^{2+}$
- ✓$[Co(NH_3)_6]^{3+}$
- D$[Ni(NH_3)_6]^{2+}$
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(Round off to the Nearest Integer).
[Given : Henry's law constant $= K _{ H }=8.0 \times 10^{4} kPa$ for $O _{2}$ Density of water with dissolved oxygen $=1.0\, kg\, dm ^{-3}$ ]
$I-$ acid catalysed hydration
$II-$ $HBO$
$III-$ oxymercuration-demercuration
Statement $I$: Fluorine has most negative electron gain enthalpy in its group.
Statement $II$: Oxygen has least negative electron gain enthalpy in its group.
In the light of the above statements, choose the most appropriate from the options given below.