Question

q12. (3.5 points) place the following types of light into order of increasing photon energy: red light, blue light, microwaves, x - rays. dr. gavin kirton - biology & chemistry - lincoln memorial university chem 100 - introduction to chemistry - fall 2025 < < < out of the above, the electromagnetic radiation with the longest wavelength is

Explanation:

Step1: Recall photon - energy and wavelength relationship

The energy of a photon is given by $E = h
u=\frac{hc}{\lambda}$, where $h$ is Planck's constant, $
u$ is the frequency, $c$ is the speed of light, and $\lambda$ is the wavelength. This means that energy is inversely proportional to wavelength. Longer - wavelength radiation has lower photon energy.

Step2: Identify wavelengths of given radiations

Microwaves have long wavelengths (on the order of centimeters to meters). Red light has a wavelength in the range of 620 - 750 nm. Blue light has a wavelength in the range of 450 - 495 nm. X - rays have very short wavelengths (on the order of 0.01 - 10 nm).

Step3: Order by photon energy

Based on the inverse - relationship between energy and wavelength, the order of increasing photon energy (decreasing wavelength) is: microwaves < red light < blue light < X - rays.

Answer:

microwaves < red light < blue light < X - rays
The electromagnetic radiation with the longest wavelength is microwaves.