What is the vibrational frequency for i2?

The iodine molecules are excited at 532 nm from the ground state X into the v = 32 vibrational level of the B state.

What is the purpose of use of grating in the experiment of determination of elements in iodine vapor?

Each absorbed wavelength will be observed using a grating spectrometer, and from it characteristics of the iodine molecule will be determined. The spectrometer uses a blazed reflection grating to split the incoming light into its constituent wavelengths (see left hand image in Figure 1).

Is Iodine a diatomic?

Diatomics on the Periodic Table. The 7 diatomic elements are hydrogen (H), nitrogen (N), oxygen (O), fluorine (F), chlorine (Cl), bromine (Br), and iodine (I). We call them diatomic elements because the atoms appear in pairs.

What is the Colour of iodine gas?

violet
Iodine is a chemical element with the symbol I and atomic number 53. The heaviest of the stable halogens, it exists as a semi-lustrous, non-metallic solid at standard conditions that melts to form a deep violet liquid at 114 degrees Celsius, and boils to a violet gas at 184 degrees Celsius.

How do you find absorption spectra?

To get an absorption spectrum, just shine white light on a sample of the material that you are interested in. White light is made up of all the different wavelengths of visible light put together. In the absorption spectrum there will be gaps.

What are Fraunhofer rays?

Fraunhofer lines, in astronomical spectroscopy, any of the dark (absorption) lines in the spectrum of the Sun or other star, caused by selective absorption of the Sun’s or star’s radiation at specific wavelengths by the various elements existing as gases in its atmosphere.

In which spectra are Fraunhofer lines found?

When a solar spectrum is closely examined, it is found that it consists of several dark lines. These dark lines found in the solar spectrum are known as the Fraunhofer lines. The solar spectrum is found to be an example of a line absorption spectrum.