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In the spectrum, two main peaks at _________ and ________ are observed.

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in Analytical Instrumentation by (131k points)
In the spectrum, two main peaks at _________ and ________ are observed.

(a) 284.6, 532.5

(b) 248.6, 523.5

(c) 264.8, 535.2

(d) 246.8, 553.2

I had been asked this question in an interview.

My enquiry is from Electron Spectroscopy for Chemical Analysis in portion Electron and Ion Spectrometers of Analytical Instrumentation

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The correct answer is (a) 284.6, 532.5

For explanation I would say: In the spectrum, two main peaks at 284.6 and 532.5 are observed. The unit for counting energy is electron-volt.

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