Considering the attached image;
Answer;
- Lithium (Li) and Flourine (F)
Step-by-step explanation;
-(Li) Lithium and (F) Fluorine would create a binary ionic compound which would be lithium fluoride which would be (LiF). Lithium is an alkali metal in group 1 in the periodic table , while flourine is a halogen in group 7. Lithium reacts by loosing an electron while flourine reacts by gaining one electron. Therefore, they reacts forming LiF which is an ionic compound.
-They would create an ionic compound because lithium is a metal and fluorine is a nonmetal. Metal + Nonmetal = ionic compound.