How is a line emission spectrum produced?
An emission line will appear in a spectrum if the source emits specific wavelengths of radiation. This emission occurs when an atom, element or molecule in an excited state returns to a configuration of lower energy.
How is the bright line spectrum of sodium produced?
Answer and Explanation: The correct statement is: “Electron jump from higher to lower energy level is responsible for the production of characteristic bright-line…
What is the emission spectrum of sodium?
The sodium spectrum is dominated by the bright doublet known as the Sodium D-lines at 588.9950 and 589.5924 nanometers. From the energy level diagram it can be seen that these lines are emitted in a transition from the 3p to the 3s levels. The line at 589.0 has twice the intensity of the line at 589.6 nm.
How does the emission spectrum work?
How an Emission Spectrum Is Produced. When an atom or molecule absorbs energy, electrons are bumped into a higher energy state. When the electron drops to a lower energy state, a photon is released equal to the energy between the two states.
What is the line emission spectrum?
When an electric current passes through a gas, it gives energy to the gas. This energy is then given out as light of several definite wavelengths (colours). This is called a line emission spectrum.
What would cause light to be emitted from a sodium atom?
The emission of light corresponds to electrons in the molecules falling to lower energy levels. When the electrons drop in energy level, they emit light.
How is a bright-line spectrum produced in terms of excited state energy transitions and ground state?
–energy released – excited to ground -An electron absorbs energy and moves to a higher shell (energy level). As the electron returns to a lower shell (energy level), it releases energy in the form of a bright- line spectrum.
Why sodium lines are called D lines?
The lines were originally observed as dark features (absorption lines) in the optical spectrum of the Sun. He labeled the lines with letters from A to K. A strong doublet at 589.0 nm and 589.6 nm is observed in the Sodium emission spectrum, identifying the D-lines as due to Sodium in the sun.
How emission and absorption spectra are produced?
Spectrophotometers are responsible for producing both emission and absorption spectra. Light first passes through fiber optic cables and into the spectrophotometer through the entrance slit. This light gets directed onto a grating, dispersing it into its different frequencies, which correspond to energy levels.
Which of the following would produce an emission line spectrum?
The emission line spectrum is produced by electrons jumping up in energy level, while the absorption line spectrum is produced by electrons jumping down in energy level.
How are emission and absorption spectra produced?
What is the emission spectrum of sodium atoms?
Sodium Atomic Emission Spectrum The sodium spectrum is dominated by the bright doublet known as the Sodium D- lines at 588.9950 and 589.5924 nanometers. From the energy level diagram it can be seen that these lines are emitted in a transition from the 3p to the 3s levels.
What is the wavelength of sodium D lines in the spectrum?
The sodium spectrum is dominated by the bright doublet known as the Sodium D- lines at 588.9950 and 589.5924 nanometers. From the energy level diagram it can be seen that these lines are emitted in a transition from the 3p to the 3s levels.
How is an emission spectrum formed?
An emission spectrum is formed when an excited gas is viewed directly through a spectroscope. Emission spectroscopy is a spectroscopic technique which examines the wavelengths of photons emitted by atoms or molecules during their transition from an excited state to a lower energy state.
What is a line spectrum in chemistry?
A spectroscope or a spectrometer is an instrument which is used for separating the components of light, which have different wavelengths. The spectrum appears in a series of lines called the line spectrum. This line spectrum is called an atomic spectrum when it originates from an atom in elemental form. Each element has a different atomic spectrum.