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When electromagnetic radiation of wavelength 300 nm falls on the suface of sodium electrons are...

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When electromagnetic radiation of wavelength 300 nm falls on the suface of sodium electrons are emitted wi a kinetic energy of 1 68 x 105 J mol What is the minimum energy needed to remove an electron fro sodium What is the maximum wavelength that will cause a photoelectron to be emitted A 908 nm B 517 nm C 1010 nm D 205 nm

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