Here's a breakdown:

* Electromagnetic radiation is a form of energy that travels in waves.

* Wavelength is the distance between two successive crests or troughs of a wave.

* Frequency is the number of waves that pass a point in a given time.

* Energy is directly proportional to frequency and inversely proportional to wavelength.

Therefore:

* Longer wavelength = Lower frequency = Lower energy

* Shorter wavelength = Higher frequency = Higher energy

Examples:

* Radio waves have the longest wavelengths and lowest energies.

* Gamma rays have the shortest wavelengths and highest energies.

So, to answer your question, the form of radiation with the longer wavelength will have less energy.