A & B are respectively:

MCQ

$A$ & $B$ are respectively:

✓

Answer

Correct option: D.

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List$-I$ (Metal Ion)	List$-II$ (Group in Qualitative analysis)
$(a)$ ${Mn}^{2+}$	$(i)$ Group $- III$
$(b)$ ${A} {s}^{3+}$	$(ii)$ Group $- IIA$
$(c)$ ${Cu}^{2+}$	$(iii)$ Group $- IV$
$(d)$ ${Al}^{3+}$	$(iv)$ Group $- IIB$

Choose the most appropriate answer from the options given below :

Which of the following is/are true about $\mathrm{A}^{\prime}, \mathrm{B}^{\prime}, \mathrm{C}^{\prime}$ and $\mathrm{D}^{\prime}$ ?

$A$. Order of atomic radii: $\mathrm{B}^{\prime}<\mathrm{A}^{\prime}<\mathrm{D}^{\prime}<\mathrm{C}^{\prime}$

$B$. Order of metallic character: $\mathrm{B}^{\prime}<\mathrm{A}^{\prime}<\mathrm{D}^{\prime}<\mathrm{C}^{\prime}$

$C$. Size of the element : $\mathrm{D}^{\prime}<\mathrm{C}^{\prime}<\mathrm{B}^{\prime}<\mathrm{A}^{\prime}$

$D$. Order of ionic radii : $\mathrm{B}^{\prime+}<\mathrm{A}^{\prime+}<\mathrm{D}^{\prime+}<\mathrm{C}^{\prime+}$

Choose the correct answer from the options given below :