Fundamental Limit of the Periodic Table — Speed of Light and Closure of Atomic Structure

The periodic table does not terminate arbitrarily. This work shows that the CCEA scaling ratio Λ = CXG / CX rises smoothly across all known elements, approaching ~1.2 × 10⁻¹⁰⁰ at Z = 137 —where the innermost electron would travel at 99.97% of the speed of light. Relativistic effects appear naturally in the trend without breaking the underlying proportionality. The table converges toward a physical boundary set by special relativity rather than running out of elements.