Here's a breakdown of the formula:
* NH₄⁺: Ammonium ion
* Al³⁺: Aluminum ion
* SO₄²⁻: Sulfate ion
* 12H₂O: Twelve molecules of water of crystallization
The formula represents one unit of ammonium alum, which consists of one ammonium ion, one aluminum ion, two sulfate ions, and twelve water molecules.
It's important to remember that ammonium alum is not a simple combination of ammonium and aluminum sulfates, but rather a distinct chemical compound with its own unique properties.
