Mercury's atomic emission spectrum is shown below. estimate the wavelength of the dark green line. what is its hz what is the energy of an dark green photon emitted by the mercury atom?

Explanation:

From the atomic emission spectrum of Mercury, the wavelength of the dark green line is 545 nm.

The relation between the frequency and wavelength is given by :

Let E is the energy of an dark green photon emitted by the mercury atom. It is given by :

h is Planck's constant

Hence, this is the required solution.

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.