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Which of the following is the lightest isotope used as a primary ion?

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in Analytical Instrumentation by (131k points)
Which of the following is the lightest isotope used as a primary ion?

(a) He

(b) ^2He

(c) ^3He

(d) ^3H

The question was posed to me in semester exam.

My enquiry is from Instrumentation of Ion Spectroscopy topic in chapter Electron and Ion Spectrometers of Analytical Instrumentation

1 Answer

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Best answer
The correct option is (c) ^3He

Best explanation: ^3He is the lightest isotope used as a primary ion. Though hydrogen is lightest it is not used.

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