Permutit is not a single molecule with a specific molecular formula. It is a hydrated sodium aluminosilicate that acts as a cation exchanger, meaning it can replace harmful ions in water with sodium ions.

Here's a breakdown:

* Hydrated: It contains water molecules within its structure.

* Sodium aluminosilicate: It is composed of sodium (Na), aluminum (Al), silicon (Si), and oxygen (O) atoms.

The exact composition and proportions of these elements vary depending on the specific type of permutit.

A common formula often used to represent permutit is:

Na₂[Al₂Si₂O₈]·xH₂O

Where:

* Na₂ represents two sodium ions

* [Al₂Si₂O₈] represents the aluminosilicate framework

* xH₂O represents variable number of water molecules

This formula is a simplified representation and doesn't fully describe the complex structure of permutit.

Remember, permutit is a material with variable composition, and the specific molecular formula can vary depending on its manufacturing process and intended application.