What is the atomic radius? A measure of the size of a neutron.
A measure of the size of a proton.
A measure of the size of an atom.
A measure of the size of a nucleus.

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.