d and f Block Elements question bank (Chemistry)

The correct statements among the following are.
A. Basic vanadium oxide is used in the manufacture of $\text{H}_2\text{SO}_4$.
B. The spin-only magnetic moment value of the transition metal halide employed in Ziegler-Natta polymerization is $2.84$ BM.
C. The p-block metal compound employed in Ziegler-Natta polymerization has the metal in $+3$ oxidation state.
D. The number of electrons present in the outer most 'd' orbital of metal halide employed in Wacker process is $8$.

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The correct statements among the following are,
A. $Mo(VI)$ and $W(VI)$ are less stable than $Cr(VI)$.
B. $Ce^{4+}$ and $Tb^{4+}$ are oxidant while $Eu^{2+}$ and $Yb^{2+}$ are reductant.
C. $Cm$ and $Am$ have seven unpaired electrons.
D. Actinoid contraction is greater from element to element than lanthanoid contraction.

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