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50. It takes 208.4kJ of energy to remove 1 mole of electrons from an atom on the surface of rubidium metal. ( 1 mol electrons

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50. It takes 208.4kJ of energy to remove 1 mole of electrons from an atom on the surface of rubidium metal. ( 1 mol electrons = 6.0221023 electrons.) How much energy does it take to remove a single electron from an atom on the surface of solid rubidium? What is the maximum wavelength of light capable of doing this

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