Answer: The number of lines does not equal the number of electrons in an atom . For example, hydrogen has one electron, but its emission spectrum shows many lines. ... Hence, the photons of an emission spectrum represent a variety of possible energy levels.
Why is the emission spectrum of hydrogen not continuous?
Quick answer: Atomic spectra are continuous because the energy levels of electrons in atoms are quantized . The electrons in an atom can have only certain energy levels. ... Each packet of energy corresponds to a line in the atomic spectrum. There is nothing between each line, so the spectrum is discontinuous.
Which is wrong about atomic emission spectrum of hydrogen?
It is discontinued spectrum It is a dark line spectrum It is a bright line spectrum It is obtained by passing heat or electricity through hydrogen gas It is also called finger print of atom If you use something like a prism or diffraction grating to separate out the light, for hydrogen, you don’t get a continuous ...
What is correct about atomic emission spectrum of hydrogen?
A hydrogen atom consists of an electron orbiting its nucleus . ... Spectral emission occurs when an electron transitions, or jumps, from a higher energy state to a lower energy state. To distinguish the two states, the lower energy state is commonly designated as n′, and the higher energy state is designated as n.
Why is the atomic emission spectrum of hydrogen unusual?
Explanation: Electrons move around the hydrogen atom in electron waves patterns . These waves occur in distinct quantum energy levels. The change from one quantum energy level to another energy level has a definite energy level change.
How is atomic emission obtained?
Atomic emission spectra are produced when excited electrons return to the ground state . The emitted light of electrons corresponds to energies of the specific electrons.
How is the emission spectrum of hydrogen produced?
When unexcited, hydrogen’s electron is in the first energy level—the level closest to the nucleus. ... Hydrogen molecules are first broken up into hydrogen atoms (hence the atomic hydrogen emission spectrum) and electrons are then promoted into higher energy levels.
Can you get a continuous emission spectrum from hydrogen?
1: The Emission of Light by Hydrogen Atoms. (a) A sample of excited hydrogen atoms emits a characteristic red light. ... If a hydrogen atom could have any value of energy , then a continuous spectrum would have been observed, similar to blackbody radiation.
Why does hydrogen only emit 4 colors?
This is explained in the Bohr model by the realization that the electron orbits are not equally spaced. ... The electron energy level diagram for the hydrogen atom. He found that the four visible spectral lines corresponded to transitions from higher energy levels down to the second energy level (n = 2).
How do you use the Rydberg equation for hydrogen?
| lambda The wavelength of the photon. | n_1 and n_2 Integers where n_2 > n_1. |
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What is the absorption spectrum of hydrogen?
Emission spectrum of Hydrogen. Absorption spectrum of Hydrogen. The dark lines correspond to the frequencies of light that have been absorbed by the gas . As the photons of light are absorbed by electrons, the electrons move into higher energy levels.
What is meant by hydrogen spectrum?
The hydrogen spectrum is an important piece of evidence to show the quantized electronic structure of an atom. ... It results in the emission of electromagnetic radiation initiated by the energetically excited hydrogen atoms . The hydrogen emission spectrum comprises radiation of discrete frequencies.
Why is the emission spectrum important?
The different colors of light produced by emission spectra of different elements allows them to be identified . ... So elements can be identified by the colors their atoms produce when energy (by heating or electric current) is used to reveal their emission fingerprints.
Why each element has a unique emission spectrum?
There are many possible electron transitions for each atom, and each transition has a specific energy difference. This collection of different transitions, leading to different radiated wavelengths , make up an emission spectrum. Each element’s emission spectrum is unique.
What does the emission spectrum of hydrogen tell us?
Emission Spectrum of Hydrogen. When an electric current is passed through a glass tube that contains hydrogen gas at low pressure the tube gives off blue light . When this light is passed through a prism (as shown in the figure below), four narrow bands of bright light are observed against a black background.
How do I calculate the number of emission lines?
For example, suppose one atom with an electron at energy level 7 (n2=7). That electron can “de-excite” from n2=7 to n1=6,5,4,3,2, or 1. All those transitions give one spectral line for each. Thus, total of 1×6=n1( n2−n 1) (foot note 1) spectral lines would be present in the spectrum.
