Asked by: Emely Beltrami
Asked in category: science, physics
Last Updated: 25th Apr 2024
How are atomic spectra created using the terms ground or excited?
Photons are produced when electrons move from one higher energy level to another. This is visible in the spectrum. In the ground energy level, an atom is at its lowest level. An electron that is not in the most energetic orbit possible is called excited.
This being said, how are atomic spectra created?
When excited electrons return back to their ground state, they produce atomic emission spectra. The emission of energy is produced when electrons return to a lower level of energy.
How does the Bohr model also explain atomic spectrum? Niels Bohr explained how the line spectrum of hydrogen atom was created by the assumption that electrons move in circular orbits, and that only certain radius orbits were permitted. The ground state of an atom was the closest orbit to its nucleus. It is the most stable orbit. Orbits further away are higher-energy excited states.
It is also important to understand why a line spectra forms when an atom emits light after it has been excited.
An electron is promoted to a higher energy level and an atom, element, or molecule is called to be in an excited state. Emission lines are when electrons from an excited atom, element, or molecule move between different energy levels and return to the ground state.
What was the result of studying the emission spectra for atoms?
The atom was created using quantum theory.
17 Related Question Answers Found
Which color has the most energy?
Which colour in the visible light spectrum most energy. The color that has the most energy is violet. Since violet waves have the shortest wave length, they carry the most energy.
How are spectrums formed?
An emission spectrum is the line pattern formed when an element is excited and gives off energy. An absorption spectrum is formed when white light passes through a cool gas. The gas absorbs certain wavelengths of energy and allows others to pass through.
Which element has the most spectral lines?
Mercury: the strongest line, at 546 nm, gives mercury a greenish color. Fig. 2. When heated in a electric discharge tube, each element produces a unique pattern of spectral `lines'.
How are absorption lines formed?
The intensity depends on the density and temperature of the gas. An absorption line is produced when a photon of just the right energy is absorbed by an atom, kicking an electron to a higher energy orbit. Other photons moving through the gas with the wrong energy will pass right on by the atoms in the thin gas.
How are photons produced?
A photon is produced whenever an electron in a higher-than-normal orbit falls back to its normal orbit. During the fall from high energy to normal energy, the electron emits a photon -- a packet of energy -- with very specific characteristics.
What are absorption lines?
An absorption line will appear in a spectrum if an absorbing material is placed between a source and the observer. This material could be the outer layers of a star, a cloud of interstellar gas or a cloud of dust. Absorption lines are usually seen as dark lines, or lines of reduced intensity, on a continuous spectrum.
How is atomic spectroscopy used?
Atomic spectroscopy includes a number of analytical techniques used to determine the elemental composition of a sample (it can be gas, liquid, or solid) by observing its electromagnetic spectrum or its mass spectrum. Element concentrations of a millionth (ppm) or one billionth part (ppb) of the sample can be detected.
How is light produced?
Light is made up of little packets of energy called photons. Most of these photons are produced when the atoms in an object heat up. Heat “excites” the electrons inside the atoms and they gain extra energy. This extra energy is then released as a photon.
How many spectral lines does hydrogen have?
four lines
What do spectral lines tell us?
From spectral lines astronomers can determine not only the element, but the temperature and density of that element in the star. The spectral line also can tell us about any magnetic field of the star. The light from the stuff between the stars allows astronomers to study the interstellar medium (ISM).
Why do elements have multiple spectral lines?
The frequencies are characteristic of the properties of the nucleus and the numbers of electrons distributed among the various “shells.” According to quantum mechanics, there is a maximum number of electrons allowed in each bound shell. This is why different elements have different discrete emission frequencies.
What causes the formation of spectral lines?
When electrons move from a higher energy level to a lower one, photons are emitted, and an emission line can be seen in the spectrum. Absorption lines are seen when electrons absorb photons and move to higher energy levels. An atom in its lowest energy level is in the ground state.
Why do different elements produce different colors of light when heated?
Heating an atom excites its electrons and they jump to higher energy levels. When the electrons return to lower energy levels, they emit energy in the form of light. Every element has a different number of electrons and a different set of energy levels. Thus, each element emits its own set of colours.
How are hydrogen Balmer absorption lines produced?
Balmer series is the frequencies of photons that are absorbed/emitted when the electron in a hydrogen atom move up from the 2nd level or down to the 2nd level. These frequencies happen to be in the visible part of the spectrum hence why they are useful.
Which color of light has the greatest energy?
When it comes to visible light, the highest frequency color, which is violet, also has the most energy. The lowest frequency of visible light, which is red, has the least energy.
What is Bohr equation?
Bohr equation. The Bohr equation, named after Danish physician Christian Bohr (1855–1911), describes the amount of physiological dead space in a person's lungs. This is given as a ratio of dead space to tidal volume. It differs from anatomical dead space as measured by Fowler's method as it includes alveolar dead space
Who created the Bohr model?
Niels Bohr
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