1. The Basics

* Iron Atom: An iron atom has 26 protons (positive charge), 26 electrons (negative charge), and typically 30 neutrons. It's electrically neutral because the number of protons and electrons is equal.

* Ferric Ion: A ferric ion (Fe³⁺) is an iron atom that has lost three electrons. This leaves it with a net positive charge of +3.

2. The Process

The transformation from iron atom to ferric ion usually happens through oxidation. Here's a simplified explanation:

* Loss of Electrons: An iron atom loses three electrons, typically to a more electronegative element like oxygen. This process requires energy, which can come from heat, light, or chemical reactions.

* Formation of Cations: When an atom loses electrons, it becomes positively charged and is called a cation. In this case, the iron atom becomes a ferric ion (Fe³⁺).

3. Example: Rust

A common example is the formation of rust. When iron is exposed to air and moisture, the following reaction occurs:

* Iron (Fe) + Oxygen (O₂) + Water (H₂O) → Iron Oxide (Fe₂O₃) (rust) + Hydrogen (H₂)

In this reaction, iron atoms lose electrons to oxygen atoms, forming iron oxide (rust) and ferric ions (Fe³⁺).

4. Chemical Notation

The chemical notation for the process can be written as:

* Fe → Fe³⁺ + 3e⁻

This shows that an iron atom (Fe) loses three electrons (e⁻) to become a ferric ion (Fe³⁺).

In summary:

An iron atom becomes a ferric ion by losing three electrons through a process called oxidation. This typically occurs in the presence of oxygen and water, like in the formation of rust.