If an Electron Has a Wavelength of 0

question 36

Multiple Choice

If an electron has a wavelength of 0.123 nm,what is its kinetic energy,in electron-volts? This energy is not in the relativistic region.(m_electron = 9.11 × 10^-31 kg,1 eV = 1.60 × 10^-19 J,h = 6.626 × 10^-34 J ∙ s)

• A)19.8 eV
• B)60.2 eV
• C)80.4 eV
• D)99.5 eV
• E)124 eV

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