Final answer:
The formula for zinc fluoride is ZnF₂, which is created from zinc and fluoride ions combining in a 1:2 ratio to balance their charges.
Step-by-step explanation:
The formula for zinc fluoride is ZnF₂. This binary ionic compound is formed by zinc (Zn) which carries a 2+ charge and fluoride (F) which carries a 1- charge. When these two ions combine, their charges must balance; since zinc has a +2 charge and fluorine has a -1 charge, two fluoride ions are needed to balance the charge of one zinc ion, resulting in the formula ZnF₂.