Question

1. choose the best answer using the periodic table. what is the name of this compound: fe₂o₃? iron (ii) oxide iron (iii) oxide iron oxide iron (iii) oxide (ii)

Explanation:

Step1: Set up charge balance equation

Let the charge of Fe be $x$. Oxygen has a charge of $-2$. For $\text{Fe}_2\text{O}_3$, the total charge is 0:
$$2x + 3(-2) = 0$$

Step2: Solve for Fe charge

$$2x - 6 = 0$$
$$2x = 6$$
$$x = +3$$

Step3: Name the compound

Iron with +3 charge is iron (III), paired with oxide.

Answer:

iron (III) oxide