Here's why:

* Solvents are liquids: Francium is a solid at room temperature.

* Francium is highly reactive: It reacts violently with water and air, making it impossible to use as a solvent in any practical sense.

Non-polar solvents are typically organic compounds like hydrocarbons (e.g., hexane, benzene) or halocarbons (e.g., chloroform).

Therefore, the question about francium being a non-polar solvent doesn't make sense in the context of chemistry.