Answer to Question #171799 in General Chemistry for ncssr

Question

Electrons with a kinetic energy of 6.023 x 10^4 J/mol are evolved from the surface of a metal, when exposed to a radiation of wavelength of 600 nm (photoelectric effect). The minimum amount of energy required to remove an electron from the metal atom is___. (h = 4.14*10^-15 eV-s, c = 3*10^8 m/s).

Answer 1

The minimum amount of energy required = total energy (hc/wavelength) - kinetic energy.

= 13.931 × 10⁴ J/mol.