Answer:
Al + Cl2 → AlCl3
Step-by-step explanation:
The missing product in the combination reaction between aluminum (Al) and chlorine (Cl2) can be determined by examining the valence and combining capacities of the elements.
Aluminum (Al) has a valence of +3, while chlorine (Cl) has a valence of -1. To balance the charges and form a neutral compound, you need three chlorine atoms for every one aluminum atom.
So, the missing product in the reaction Al + Cl2 is aluminum chloride (AlCl3).
The balanced reaction is:
Al + Cl2 → AlCl3