viết ptpu xảy ra khi lần lượt các chất sau tác dụng với Cl,Br2,I2;a) Na, k,Rb,Mg,Ba,Al,Fe,Ca,Zn,Cu,H2,H2O

\(\begin{array}{l}
C{l_2} + 2Na \to 2NaCl\\
{I_2} + 2Na \to 2NaI\\
B{r_2} + 2Na \to 2NaBr\\
C{l_2} + 2K \to 2KCl\\
{I_2} + 2K \to 2KI\\
B{r_2} + 2K \to 2KBr\\
C{l_2} + Mg \to MgC{l_2}\\
{I_2} + Mg \to Mg{I_2}\\
B{r_2} + Mg \to MgB{r_2}\\
C{l_2} + Ba \to BaC{l_2}\\
{I_2} + Ba \to Ba{I_2}\\
B{r_2} + Ba \to BaB{r_2}\\
2Al + 3C{l_2} \to 2AlC{l_3}\\
2Al + 3B{r_2} \to 2AlB{r_3}\\
2Al + 3{I_2} \to 2Al{I_3}\\
2Fe + 3C{l_2} \to 2FeC{l_3}\\
2Fe + 3B{r_2} \to 2FeB{r_3}\\
Fe + {I_2} \to Fe{I_2}\\
C{l_2} + Ca \to CaC{l_2}\\
{I_2} + Ca \to Ca{I_2}\\
B{r_2} + Ca \to CaB{r_2}\\
C{l_2} + Zn \to ZnC{l_2}\\
{I_2} + Zn \to Zn{I_2}\\
B{r_2} + Zn \to ZnB{r_2}\\
{H_2} + C{l_2} \to 2HCl\\
{H_2} + B{r_2} \to 2HBr\\
{H_2} + {I_2} \to 2HI\\
{H_2}O + C{l_2} \to HCl + HClO
\end{array}\)