There's a bit of a mix-up in the elements and charges here. Let's clarify:

* Barium (Ba) is the element you're looking for, not calcium (Ca). Barium has a +2 charge (Ba²⁺).

* Hydroxide (OH) has a -1 charge (OH⁻).

* Calcium chloride is formed from calcium (Ca²⁺) and chloride (Cl⁻), not barium.

To form calcium chloride (CaCl₂):

* Calcium has a +2 charge (Ca²⁺)

* Chloride has a -1 charge (Cl⁻)

* To balance the charges, you need two chloride ions for every one calcium ion.

So, the correct formula for calcium chloride is CaCl₂.

Let me know if you'd like to know the formula for a compound containing barium and hydroxide!