What Is the Minimum Energy an Incoming Electron Must Have

question 68

Multiple Choice

What is the minimum energy an incoming electron must have to knock a K shell electron out of an atom of molybdenum (Z = 42) ?

• A) 10.1 × 10³ eV
• B) 11.3 × 10³ eV
• C) 22.9 × 10³ eV
• D) 34.4 × 10³ eV
• E) 44.0 × 10³ eV

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