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Which method, UPS or XPS, is better for resolving chemical shifts and why? Which direction would...

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Chemistry

Which method, UPS or XPS, is better for resolving chemicalshifts and why? Which direction would a peak in a given spectrummove if an atom loses a valence charge? What if the atom gains avalence charge? Does the kinetic energy of the photoelectron dependon the X-ray or UV beam energy?

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4.5 Ratings (873 Votes)
XPS give better resolution peaks than UPS because because of the high frequency of the light and the substantial charge and energy of emitted electrons For each and every element there will be a characteristic binding energy associated    See Answer
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