---
title: "A student investigates the photoelectric effect on a clean sample of metal. The minimum energy required to eject one mole of electrons from the metal surface is \\(240\\text{ kJ/mol}\\). Which of the following is closest to the maximum wavelength of light capable of ejecting an electron from the metal?"
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url: "https://nerd-notes.com/ubq/121496/"
date_modified: "2026-08-23T05:04:50+00:00"
---

# A student investigates the photoelectric effect on a clean sample of metal. The minimum energy required to eject one mole of electrons from the metal surface is \(240\text{ kJ/mol}\). Which of the following is closest to the maximum wavelength of light capable of ejecting an electron from the metal?

A student investigates the photoelectric effect on a clean sample of metal. The minimum energy required to eject one mole of electrons from the metal surface is \(240\text{ kJ/mol}\). Which of the following is closest to the maximum wavelength of light capable of ejecting an electron from the metal?

- **A.** \(8.3 \times 10^{-31}\text{ m}\)
- **B.** \(1.7 \times 10^{-15}\text{ m}\)
- **C.** \(2.5 \times 10^{-7}\text{ m}\)
- **D.** \(5.0 \times 10^{-7}\text{ m}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/121496/*