Suppose an Electron Is Confined in a One-Dimensional Box of Width

Multiple Choice

Suppose an electron is confined in a one-dimensional box of width L which is two times the Bohr's radius of 0.0529 nm.The energy of the ground state of the electron is

A) 5.38 $\times$ 10^-18 J
B) 2.72 $\times$ 10^-18 J
C) 1.36 $\times$ 10^-18 J
D) 1.09 $\times$ 10^-18 J
E) None of these is correct.