Răspuns:
2Na + Cl2 => 2NaCl
Mg +Cl2 => MgCl2
Ca + Cl2 => CaCl2
2Al + 3Cl2 => 2AlCl3
2Fe + 3Cl2 => 2FeCl3
Cu + Cl2 => CuCl2
2Na + Br2 => 2NaBr
Mg+ Br2 => MgBr2
Ca + Br2 => CaBr2
2Al + 3Br2 => 2ABrl3
2Fe + 3Br2 => 2FeBr3
Cu + Br2 => CuBr2
2Na + I2 => 2NaI
Mg +I2 => MgI2
Ca + I2 => CaI2
2Al + 3I2 => 2AlI3
2Fe + 3I2 => 2FeI3
Cu + I2=> CuI2