Answer:
Barium iodide
Step-by-step explanation:
barium iodide is ionic compound. it is formed by the barium metal and halogen element iodine.
Barium is present in group two have two valance electrons.
Iodine is present in group seventeen and have seven valance electrons.
Iodine needed one electron two complete the octet.
That's why two atoms of iodine combine with one atom barium and form ionic compound called barium iodide.
Ba⁺² I₂²⁻
The overall charge is equal cancel the effect of each other and form over all compound neutral.