Final answer:In the compound TiO2, the charge of an oxide ion is -2. Titanium ions have a +4 charge, requiring two -2 Oxide ions to balance it, which also reflect the principle of conservation of charge.Explanation:In the compoundTiO2, also known as titanium dioxide, the oxide ion is O2-. Here, titanium (Ti) ions have a charge of +4, and to balance this, two oxide ions, each with a charge of -2, are needed. Thus, the overall charge of the compound is zero, indicating that the charges are balanced. This principle is based on thelaw of conservation of charge, according to which the total charge before and after a reaction or in a compound must remain the same.Learn more about Ionic Charge here:brainly.com/question/35384202#SPJ4...

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