Questão 3240423

\(\text{Ca}^{2+}, \text{Fe}^{2+} \text{ e } \text{Pb}^{2+}\) .

\(\text{Bi}^{2+}, \text{Pb}^{2+} \text{ e } \text{Sn}^{2+}\) .

\(\text{Co}^{2+}, \text{Fe}^{2+} \text{ e } \text{Zn}^{2+}\) .

\(\text{Ca}^{2+}, \text{Cd}^{2+} \text{ e } \text{Co}^{2+}\) .

\(\text{Cd}^{2+}, \text{Pb}^{2+} \text{ e } \text{Sn}^{2+}\) .