Question

Mercury's atomic emission spectrum is shown below.

Estimate the wavelength of the dark green line.


What is its frequency?_____ Hz

What is the energy of an dark green photon emitted by the mercury atom?

Answer 1

the frequency of the wavelength is 551 because the green line is on it

Answer 2

Step-by-step 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 :

`c=f* \lambda`

`f=(c)/(\lambda)`

`f=(3* 10^8\ m/s)/(545* 10^(-9)\ m)`

`f=5.504* 10^(14)\ Hz`

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

`E=hf`

h is Planck's constant

`E=6.63* 10^(-34)\ J-s* 5.504* 10^(14)\ Hz`

`E=3.64* 10^(-19)\ J`

Hence, this is the required solution.