Scientists began to describe matter as behaving like a wave rather than a particle after they observed which phenomenon? a. the flow of electrons when certain types of light are shined on a metal surface b. light of specific frequencies given off by excited atoms c. heated metal did not give off ultraviolet light, as it was expected to d. interference patterns formed by electrons

option D. Interference patterns formed by electrons

Explanation:

Light behaves like wave as well as a particle. Light shows wave phenomenons such interference and diffraction and particle nature as seen in photoelectric effect.

Similarly matter also behaves like both particle and wave. de Broglie wave is associated with the matter. It means, whenever a matter moves, a de Broglie wavelength can be associated with it.

where, is the de broglie wavelength, h is the Planck's constant, m is the mass of the matter and v is the velocity. (mv) is the momentum of the matter.

Matter waves were observed in an experiment with electrons which showed interference pattern same as wave phenomenon. Thus, option D is correct.