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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$I$. Boron trioxide is acidic
$II$. Oxides of aluminium and gallium are amphoteric
$III$. Oxides of indium and thallium are basic