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Do atoms in excited states emit radiation randomly at any wavelength?
Wiki User
∙ 12y ago
yes
Wiki User
∙ 12y ago
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Does Heat have shorter wavelengths than visible light?
No. Heat is infrared radiation ("infra" means "lower"). Lower frequency means longer wavelength. All radiation is captured by antennas that resonate at the frequency of the radiation. The "antennas" for visible light are electrons that use the radiation to jump into excited states and cause optical neurons to fire. The "antennas" of heat (infrared) are bigger -- they are molecules that jiggle faster when the radiation hits them. That jiggling is heat.
What does a hydrogen atom transitioning from the 2nd to the 1st excited state produce?
A hydrogen atom transitioning from the 2nd to the 1st excited state produces a photon of ultraviolet light. This ultraviolet light has a specific wavelength corresponding to the energy difference between the two states.
Do atoms in the excited state have more electrons than in the ground state?
Yes, because an atom in an excited state will normally give off energy and go to a less-excited state or to its ground state. Some atoms have long-lived excited states and are called "metastable".
What is the relationship between the color of the star and temperature of a star?
The color of a star is related with the wavelength of the light observed. Wien's Law states that: Peak Wavelength x Surface Temperature = 2.898x10-3 Peak Wavelength is the wavelength of the highest intensity light coming from a star.
Do electrons in stationary states emit the most radiation?
No, they don't
Does Heat have shorter wavelengths than visible light?
No. Heat is infrared radiation ("infra" means "lower"). Lower frequency means longer wavelength. All radiation is captured by antennas that resonate at the frequency of the radiation. The "antennas" for visible light are electrons that use the radiation to jump into excited states and cause optical neurons to fire. The "antennas" of heat (infrared) are bigger -- they are molecules that jiggle faster when the radiation hits them. That jiggling is heat.
How or where is gamma radiation formed?
In the atomic nucleus as protons and/or neutrons fall from excited states towards their ground state.
Energy gap between the excited and ground states for the sodium ion?
Ephoton=h(Planck's constant) v (frequency of the radiation)
Does black hold heat?
When a molecule absorbs visible or ultraviolet radiation, electrons in their ground state are promoted to higher states. Through various types of decay, the electrons fall back to their ground states. During this process, some infrared radiation is emitted, which is felt as heat. Black materials emit more infrared radiation because most of the decay of electrons from excited states to ground states involves infrared radiation emission.
What is the result of large doses of ionizing radiation that causes good and bad effect to plants and animals?
Ionizing radiation is any kind of radiation with enough energy (enough energy = wavelength is sufficiently short) to release a valence electron from a molecule. For instance, gamma rays emitted by the sun are highly energetic EM waves that are considered to be ionizing. A molecule that has had one of its valence electrons stripped is in a higher energetic state called a radical. When a biological entity encounters ionizing radiation, it forms radical molecules. These are often in the singlet and triplet excited states. The triplet excited state is highly reactive, and wreaks havoc on biological systems by reacting and altering the structure of DNA, proteins, and other biomolecules. Ionizing radiation typically does not have any "good" effects on plants or animals.
What does a hydrogen atom transitioning from the 2nd to the 1st excited state produce?
A hydrogen atom transitioning from the 2nd to the 1st excited state produces a photon of ultraviolet light. This ultraviolet light has a specific wavelength corresponding to the energy difference between the two states.
Explain why the fluorescence emission spectrum of a polyaromatic molecule in solution mirrors the shape of the absorption spectrum regardless of the excitation frequency?
Generally fluorescence emission spectrum is independent of the excitation wavelength because of the rapid internal conversion from higher energy initial excited states to the lowest vibrational energy level of the excited state
In which two states are the particles randomly arranged?
liquid and solid
How does an atom enter into the excited state?
An exited atom radiate through the process to gain stability. When the ratio or protons to neutrons is less or higher than that corresponding to the stability ratio the nucleus radiate either:beta (-) radiation to reduce the number of neutrons, orbeta (+) radiation or electron capture to reduce the number of protonsgamma radiation to bring the nucleus to ground state energy level.Also an excited atom emits radiation (Alpha, beta, gamma, neutrons, ...) when the nucleus atomic number is higher than 83 to reduce the number of nucleons in thenucleus to reach stability.
All objects emit and absorb radiant energy?
Theoretically false. An object at the temp of absolute zero would emit no energy or radiation. However, absolute zero does not exist in nature (as far as we know), therefor, in a practical sense the statement is true.
Why metastable state is more stable then excited state?
because according to energy profile,metastable state is lying lower than excited state.as we know that states of lower energies are more stable than states of higher energy.so it is more stable than excited state.
Do atoms in the excited state have more electrons than in the ground state?
Yes, because an atom in an excited state will normally give off energy and go to a less-excited state or to its ground state. Some atoms have long-lived excited states and are called "metastable".
