Which kind of electromagnetic radiation has the lowest frequency?

1. The spectrum is classified into types according to the frequency of the wave. 2. In order of increasing frequency the types run radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays. 3. Radio waves stand at the start of that list, so they carry the lowest frequency. 4. Gamma rays stand at the far end of the list, so they carry the highest frequency and the most energy. _Source: Siyavula Physical Sciences Grade 10 (Everything Science, CC BY 4.0), Chapter 11: Electromagnetic radiation_