### MCQs of d- and f- Block Elements

Showing 1 to 10 out of 158 Questions
1.
Elements of which groups are called d-block elements?
 (a) Groups 1 to 2 (b) Groups 3 to 12 (c) Groups 13 to 18 (d) Groups 13 to 17
2.
Which of the following elements is of d-block even then it is not transition element?
 (a) Cu (b) Ca (c) Fe (d) Hg
3.
The aqueous solution of which of the following ions is green coloured?
 (a) $C{o}^{2+}$ (b) $Z{n}^{2+}$ (c) $N{i}^{2+}$ (d) $C{r}^{2+}$
4.
What will be the order of energy of d- orbitals during their division in tetrahedral complex compound?
 (a) (b) (c) (d)
5.
Which of the following ions in its aqueous solution possesses the value of magnetic moment as 3.87?
 (a) $C{u}^{2+}$ (b) $C{r}^{3+}$ (c) $C{o}^{3+}$ (d) $F{e}^{3+}$
6.
Select the most stable oxidation state of Fe.
 (a) +2 (b) +3 (c) +4 (d) +5
7.
Which of the following compounds of transition elements is used in dry cell ?
 (a) (b) $KMn{O}_{4}$ (c) ${K}_{2}C{r}_{2}{O}_{7}$ (d) $Mn{O}_{2}$
8.
Which of the following elements is radioactive ?
 (a) Pr (b) Pm (c) Gd (d) Tm
9.
What is the general electronic configuration of actinide series ?
 (a) $\left[Xe\right]4{f}^{0-14}5{d}^{0-1}6{s}^{2}$ (b) $\left[Xe\right]4{f}^{0-14}5{d}^{0-10}6{s}^{2}$ (c) $\left[\begin{array}{cc}Rn& \end{array}\right]5{f}^{0-14}5{d}^{0-2}6{s}^{2}$ (d) $\left[\begin{array}{cc}Rn& \end{array}\right]5{f}^{0-14}5{d}^{0-2}7{s}^{2}$
10.
Select the vanadate compound from the following.
 (a) V2O3 (b) V2O5 (c) V4O8 (d) V3O6
Showing 1 to 10 out of 158 Questions