A difference of $2.3 \;ev$ separates two energy levels in an atom. What is the frequency of radiation emitted when the atom transmit from the upper level to the lower level .

Question

$\begin{array}{1 1} 5.6 \times 10^{-14}Hz \\ 5.6 \times 10^{16}Hz \\ 5.6 \times 10^{14}Hz \\ 5.6 \times 10^{-14}Hz \end{array}$