Short and Catchy:
* Ruthenium: Strong, Precious, and Rare.
* Ruthenium: The Element of Resilience.
* Ruthenium: Brighter Than Gold.
* Ruthenium: Power in a Tiny Package.
Focusing on Properties:
* Ruthenium: Corrosion-Resistant and Durable.
* Ruthenium: Hard as a Diamond, Precious as Gold.
* Ruthenium: The Catalyst for Innovation.
* Ruthenium: Unlocking the Future of Technology.
More Playful:
* Ruthenium: It's Not Just for Scientists Anymore.
* Ruthenium: The Element That's Got It All.
* Ruthenium: Be a Part of Something Extraordinary.
Ultimately, the best slogan will depend on the specific audience and purpose.
For example, a slogan for a company selling ruthenium products might be more focused on its properties and applications, while a slogan for a science museum exhibit might be more playful and educational.