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In his explanation of the threshold frequency in the photoelectric effect, Einstein reasoned that the absorbed...

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Chemistry

In his explanation of the threshold frequency in thephotoelectric effect, Einstein reasoned that the absorbed photonmust have the minimum energy required to dislodge an electron fromthe metal surface. This energy is called the work function () ofthat metal. What is the longest wavelength of radiation (in nm)that could cause the photoelectric effect in each of the followingmetals?

(a) Tungsten, = 7.16 10-19 J

__nm

(b) Tantalum, = 6.41 10-19 J

__nm

(c) Silver, = 7.59 10-19

__J

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