1
IIT-JEE 2006
MCQ (Single Correct Answer)
+3
-1
The coordination of $$\mathrm{Ni^2+}$$ is 4.
$$\mathrm{NiCl_2+KCN}$$ (excess) $$\to$$ A (cyano complex)
$$\mathrm{NiCl_2+ conc.~HCl}$$ (excess) $$\to$$ B (chloro complex)
The hybridisation of $A$ and $B$ are :
2
IIT-JEE 2004 Screening
MCQ (Single Correct Answer)
+2
-0.5
The pair of compounds having metals in their highest oxidation state is
3
IIT-JEE 1987
MCQ (Single Correct Answer)
+1
-0.25
The brown ring complex compound is formulated as [Fe(H2O)5(NO)+]SO4. The oxidation state of iron is
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