Chemistry, 06.11.2021 04:20 nyceastcoast

The minimum energy required to cause an electron to be emitted from a clean zinc surface is 6.9 x 10^-19. (a) Calculate the maximum wavelength of electromagnetic radiation which will cause an electron to be emitted from the clean zinc surface.

(b)What would be the effect of irradiating a clean zinc surface with radition of wavelength 4.0x 10^-7? You must justify your answer.

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