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 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.
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 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.
Is atomic emission spectrum of hydrogen a bright line spectrum?
Niels Bohr explained the line spectrum of the hydrogen atom by assuming that the electron moved in circular orbits and that orbits with only certain radii were allowed. … This produces an absorption spectrum, which has dark lines in the same position as the bright lines in the emission spectrum of an element.
What does the atomic emission spectrum of hydrogen look like?
A hydrogen discharge tube is a slim tube containing hydrogen gas at low pressure with an electrode at each end. If a high voltage (5000 volts) is applied, the tube lights up with a
bright pink glow
.
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.
What is the cause for line spectrum of hydrogen?
Lines in the spectrum were due to
transitions in which an electron moved from a higher-energy orbit with a larger radius to a lower-energy orbit with smaller radius
. The orbit closest to the nucleus represented the ground state of the atom and was most stable; orbits farther away were higher-energy excited states.
Why does hydrogen only have 4 spectral lines?
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. |
|---|
What are the types of emission spectrum?
- Continuous spectrum.
- Line spectrum and.
- Band spectrum.
Which of these is the best definition for an emission spectrum?
noun. the continuous spectrum or pattern of bright lines or bands seen when the electromagnetic radiation emitted by a substance is passed into a spectrometer. The spectrum is
characteristic of the emitting substance and the type of excitation to which it is subjected
.
What is difference between emission spectrum and absorption spectrum?
| Emission spectrum Absorption spectrum | It is created when the atoms of an element releases energy It is created when the atoms of an element absorbs energy |
|---|
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.
