What Wavelength,in Nm,can Strike a Metal Surface and Eject an Electron

question 74

Multiple Choice

What wavelength,in nm,can strike a metal surface and eject an electron at 1.89 × 10^-19 J if the binding energy of the metal is 289 kJ/mol?

• A)1.89 × 10^-19 nm
• B)2.75 nm
• C)189 nm
• D)290 nm
• E)297 nm

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