From the following list of observations, choose the one that most clearly supports the conclusion that electromagnetic radiation has wave characteristics.
A) the emission spectrum of hydrogenB) the photoelectric effectC) the scattering of alpha particles by metal foilD) diffractionE) cathode "rays"

Diffraction

Explanation:

Electromagnetic radiations are of dual nature i.e. they have both wave nature and particle nature.  

When a beam of light or waves are passed through a narrow hole, it gets spread out. This phenomenon is called diffraction. Diffraction is only possible, if beam of light has wave character. Light is also an electromagnetic radiation. Therefore, wave nature is supported of electromagnetic radiation is supported by diffraction.

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

answerambulatory;