What electromagnetic wave is emitted from an atom’s nucleus and has high frequency?

The emission of electromagnetic waves from an atom’s nucleus is a characteristic of nuclear reactions, where very high-energy phenomena occur. Gamma rays are a type of electromagnetic radiation that is produced by excited nuclei when they release energy as they transition to a lower energy state. This process involves the release of photons that carry a very high frequency and energy, making gamma rays the most energetic form of electromagnetic radiation.

In contrast, microwaves, X-rays, and visible light have significantly lower frequencies and energies. Microwaves are used primarily for communication and cooking and are on the lower end of the electromagnetic spectrum. X-rays, while also emitted by energetic processes, are less energetic than gamma rays and are often associated with electronic transitions or interactions. Visible light is even lower in energy and frequency, comprising the range of radiation that is detectable by the human eye.

Thus, gamma rays are the correct answer because they possess the highest frequency and are specifically linked to nuclear activity, distinguishing them from the other types of radiation listed.