The photon wavelength that contains the greatest amount of energy is inversely proportional to its wavelength. In other words, the shorter the wavelength of a photon, the higher its energy.
According to the electromagnetic spectrum, the wavelength of photons spans a wide range. At the high-energy end of the spectrum, we have gamma rays with the shortest wavelengths, followed by X-rays, ultraviolet (UV) light, visible light, infrared (IR) radiation, microwaves, and radio waves with the longest wavelengths.
Among these, gamma rays have the highest energy, followed by X-rays, UV light, and so on. Gamma rays are produced by processes such as radioactive decay, nuclear reactions, and high-energy particle interactions. They have extremely short wavelengths, on the order of picometers (10^(-12) meters), and are associated with very high-energy photons.
On the other end of the spectrum, radio waves have the longest wavelengths, ranging from millimeters to kilometers. They are lower in energy compared to other forms of electromagnetic radiation.
So, in summary, gamma rays have the highest energy among the photons, while radio waves have the lowest energy.