Atoms in Crystals Are Typically Separated by Distances Of $0.10 \mathrm {~nm}$

Short Answer

Atoms in crystals are typically separated by distances of $0.10 \mathrm {~nm}$ . What kinetic energy must a nonrelativistic electron have, in electron-volts, in order to have a wavelength of $0.10 \mathrm {~nm}$ ? (melectron $\left. = 9.11 \times 10 ^ { - 31 } \mathrm {~kg} , 1 \mathrm { eV } = 1.60 \times 10 ^ { - 19 } \mathrm {~J} , h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } \right)$