What Is the Minimum Energy an Incoming Electron Must Have $( n = 1 )$

question 90

Multiple Choice

What is the minimum energy an incoming electron must have to knock a K shell electron $( n = 1 )$ out of an atom of molybdenum, which contains 42 protons?

• A) \(44.0 \mathrm { keV }\)
• B) \(34.4 \mathrm { keV }\)
• C) \(24.0 \mathrm { keV }\)
• D) \(10.1 \mathrm { keV }\)
• E) \(11.3 \mathrm { keV }\)

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