The spectrum of singly ionised helium is the range of wavelengths of electromagnetic radiation emitted when an electron is removed from a helium atom, resulting in a positively charged ion with only one electron remaining.
The spectrum of singly ionised helium is produced when energy is applied to a helium atom, causing one of the electrons to be removed from its orbit. This results in a positively charged helium ion with a remaining electron in a higher energy level. As the electron falls back to its original energy level, it emits electromagnetic radiation in the form of a spectrum.
The spectrum of singly ionised helium is significant in understanding the structure and behavior of atoms. It also has practical applications, such as in the field of spectroscopy, where it is used to identify elements and study their properties.
The spectrum of singly ionised helium consists of a series of discrete lines, with each line corresponding to a specific wavelength of electromagnetic radiation. These lines are produced when the electron transitions between energy levels within the helium ion. The spectrum also contains both visible and non-visible wavelengths.
The spectrum of singly ionised helium differs from that of neutral helium in that it contains additional lines due to the presence of the positively charged ion. These lines correspond to the transitions of the remaining electron between energy levels within the ion. In neutral helium, these lines are not present as there is no positively charged ion to produce them.