Question

oxide has a -2 charge. what is the overall negative charge in the formula, tio₂, which contains 2 oxide ions? 2·-2 = ? -2 +4 -4 +2

Explanation:

Step1: Multiply the number of oxide ions by the charge of each oxide ion

$$2\times(- 2)$$

Step2: Calculate the product

$$2\times(-2)=-4$$

Answer:

-4