Answer
The minimum required energy is $6.89\times 10^{-19}~J$
Work Step by Step
We can find the minimum required energy:
$E = h~f$
$E = (6.626\times 10^{-34}~J~s)(1.04\times 10^{15}~Hz)$
$E = 6.89\times 10^{-19}~J$
The minimum required energy is $6.89\times 10^{-19}~J$
