Question

In Davisson-Germer experiment, nickel target get oxidised. true $=1$, false $=0$

Answer 1

Davisson-Germer experiment was conducted by two American scientists Clinton Davisson and Lester Germer, in 1927, to verify the de Broglie hypothesis that a material particle posses wave nature.

The experiment consisted of firing an electron beam from an electron gun directed to a piece of nickel crystal at normal incidence. To avoid collisions of electron with other molecules, the experiment was conducted in a vacuum chamber. But accidentally, air entered the chamber producing an oxide layer on the nickel surface. Hence the nickel target got oxidised.