Respuesta :

isaacoranseola

Answer:

3.13 eV

Explanation:

E = hf

f =7.57 x 10' Hz.

h = 6.62× 10-34Js

E = 6.62× 10-34 × 7.57 x 10' Hz

E = 5.011× 10^ -30 J

1eV = 1.6×10^-19J

Hence ,

5.011× 10^ -30 J ÷1.6×10^-19J

= 3.132×10^-49