0
What else can I help you with?
Why do atomic spectra show individual lines instead of continuous spectra?
Atomic spectra show individual lines instead of continuous spectra because each line corresponds to a specific energy level transition of electrons within the atom. When electrons move between energy levels, they emit or absorb energy in the form of light at specific wavelengths, creating distinct spectral lines. This results in the observed pattern of individual lines in atomic spectra.
Why do the emission spectra for hydrogen and helium differ?
The emission spectra for hydrogen and helium differ because each element has a unique arrangement of electrons in their atoms. This arrangement causes them to emit different wavelengths of light when excited, resulting in distinct spectral lines.
Why do stellar spectra have absorption lines?
Need a different, better answer.
What is meant by the statement spectra lines are the fingerprints of elements?
Spectra lines are specific wavelengths of light emitted or absorbed by elements. Each element has a unique set of spectral lines, which allows scientists to identify elements present in a sample by comparing the observed spectra to known patterns, similar to how fingerprints are unique to individuals.
What are the similarities between emission and absorption spectra?
The lines are at the same frequencies
Do lines of a particular element appear at the same wavelength in both emission and absorption line spectra?
No, lines of a particular element do not appear at the same wavelength in both emission and absorption line spectra. In absorption spectra, dark lines are seen where specific wavelengths are absorbed by elements in a cooler outer layer of a star or a cooler interstellar cloud. In contrast, emission spectra display bright lines when elements emit specific wavelengths of light at higher energy levels.
What are the differences between line spectra and continuous spectra in terms of their characteristics and properties?
Line spectra are composed of distinct, discrete lines of light at specific wavelengths, while continuous spectra consist of a continuous range of wavelengths without distinct lines. Line spectra are produced by excited atoms emitting light at specific energy levels, while continuous spectra are emitted by hot, dense objects like stars. Line spectra are unique to each element and can be used to identify elements, while continuous spectra are characteristic of hot, dense objects emitting thermal radiation.
What particle is responsible for spectra?
Spectra are produced by interaction of electromagnetic radiation with matter, typically atoms or molecules. The particle responsible for spectra is the photon, which carries energy and interacts with electrons in the atoms or molecules to produce the spectral lines observed in both emission and absorption spectra.
Are emission lines spectra considered fingerprints of elements?
Yes, emission lines spectra are considered fingerprints of elements because each element emits light at specific wavelengths unique to that element. By analyzing the pattern of emission lines in a spectrum, scientists can identify the elements present in a sample.
How would the spectra from galaxies appear?
They have broad emission lines of highly ionized elements.
Will everyone see all the lines in all the emission spectra of these elements?
Many catalogues of emission spectroscopy lines are published. These lines are not visible on all types of instruments.
How are elements identified fro bright line spectra?
Elements are identified from bright line spectra by comparing the observed spectral lines with known emission spectra of elements. Each element emits a unique set of spectral lines due to the characteristic energy levels of its electrons. By matching the observed lines with known patterns, scientists can determine the elements present in a sample.
