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ESCA gives sufficient chemical information up to a depth about ________ armstrong in oxide.(a) 5-20(b) 15-40(c) 40-100(d) 100-200This question was addressed to me in an internship interview.My question comes from Electron Spectroscopy for Chemical Analysis topic in chapter Electron and Ion Spectrometers of Analytical Instrumentation

Answer» RIGHT option is (b) 15-40

The best EXPLANATION: ESCA GIVES sufficient chemical information up to a DEPTH about 15-40 armstrong in oxide. ESCA is also known as X-ray photoelectron spectroscopy.


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