The threshold frequency for dislodging an electron from a zinc metal surface is 8.54 x 1014 Hz. Calculate the minimum amount of energy required to remove an electron from the metal.
The threshold frequency for dislodging an electron from a zinc metal surface is 8.54 x 1014 Hz. Calculate the minimum amount of energy required to remove an electron from the metal.
Answer:
Explanation:
frequency of radiation
= 8.54 x 10¹⁴
wave length = 3 x 10⁸ / 8.54 x 10¹⁴
= .3513 x 10⁻⁶ m
= 3513 A
Energy of this wave OR energy of each photon in eV
= 12375 / 3513
= 3.52 eV
the minimum amount of energy required = 3.52 eV.