Answer
$\nu = 6*10^{14}$ Hz
$E = 3.98*10^{-19}$ J
Work Step by Step
Given: $\lambda = 5*10^{-7}$ m
$c = \lambda \nu$
$\nu = c/\lambda$ where $c = 3*10^8$ m/s
$E = h\nu$ where $h = 6.626*10^{-34}$ J*s
Thus:
$\nu = 6*10^{14}$ Hz
$E = 3.98*10^{-19}$ J