What frequency corresponds to an absorption line at 527 nm?
Answer choices in screen shot.

Answer:
A.) 5.69 x 10¹⁴ Hz
Explanation:
To find the wavelength, you need to use the following equation:
c = λf
In this equation,
-----> c = speed of light (2.998 x 10⁸ m/s)
-----> λ = wavelength (m)
-----> f = frequency (Hz)
Before you can use the equation, you need to convert the wavelength from nanometers (nm) to meters (m).
1 x 10⁹ nm = 1 m
527 nm 1 m
-------------- x -------------------- = 5.27 x 10⁻⁷ m
1 x 10⁹ nm
c = λf <----- Equation
2.998 x 10⁸ m/s = (5.27 x 10⁻⁷ m)f <----- Insert values
5.69 x 10¹⁴ = f <----- Divide both sides by 5.27 x 10⁻⁷