The Beauty of Helium's Emission Spectra

What type of spectra is produced by helium in an electric discharge?

a) Line spectra
b) Continuous spectra
c) Absorption spectra
d) None of the above

Answer:

The emission spectra of helium in an electric discharge is an example of line spectra.

Helium, a noble gas, emits a beautiful line spectra when subjected to an electric discharge. This line spectra is a result of the specific wavelengths of light emitted by helium due to electron transitions between energy levels in the atom.

When electrons in helium atoms move from one energy level to another, they release energy in the form of light. This emitted light consists of distinct wavelengths that appear as lines in the spectra, creating a unique and visually stunning pattern.

Line spectra are characteristic of individual elements and are used in spectroscopy to identify elements present in a sample. In the case of helium, its emission spectra display sharp, discrete lines that are a signature of its atomic structure and energy levels.

Understanding the emission spectra of helium in an electric discharge not only sheds light on the properties of this noble gas, but also showcases the fascinating world of atomic physics and spectroscopy. The beauty and precision of line spectra provide valuable insights into the behavior of atoms and the interaction of light with matter.