You Want to Confine an Electron in a Box (An

Multiple Choice

You want to confine an electron in a box (an infinite well) so that its ground state energy is 5.0 × 10^-18 J. What should be the length of the box? (h = 6.626 × 10^-34 J ∙ s, mel = 9.11 × 10^-31 kg)

A) 0.11 nm
B) 0.22 nm
C) 0.15 nm
D) 0.18 nm