Here it's us to complete and balance the following reaction. Here we have lithium salt reactor with diatomic fluorine gas. So if we know here that lithium is in Group 1A, so it's plus one fluorine in Group 7-8, so it's -1. As a result, we create lithium fluoride.
We still have to balance this reaction, so I put a 2 here. So both sides have two fluorines and I'd have to put a 2 here so that both sides have two lithiums. This would represent our complete and balanced reaction between lithium fluoride well between lithium solid and fluorine gas into production of lithium fluoride.
2 Li (s) + F 2 (g) → 2 LiF (s)