Answer:
Synthesis(S)
Step-by-step explanation:
The reaction expression is given as:
2Na + I₂ → 2NaI
This reaction is a synthesis reaction or combination reaction.
A synthesis reaction is one in which a single product is formed from the combination of two or more reactants.
The combination of two elements to form a compound also falls into this category.
So, the production of NaI is a synthesis reaction.