The binary ionic compound formed from zinc and chlorine is zinc chloride, with the chemical formula ZnCl₂.

Here's how to figure that out:

* Zinc (Zn) is a metal, and it typically forms a +2 cation (Zn²⁺).

* Chlorine (Cl) is a nonmetal, and it typically forms a -1 anion (Cl⁻).

* To balance the charges, you need two chloride ions (2 x -1 = -2) to match the +2 charge of the zinc ion.

Therefore, the formula for zinc chloride is ZnCl₂.