In a transition to ground state, a photon is radiated away. It carries off the energy to make a transition to ground state possible. As soon as it is created, the photon is off to the races. It travels away at the speed of light (for the medium in which it is moving).
When the atom absorbs energy, electrons become ionized.
Any so-called "excited state".
And it doesn't have to be a 'gaseous' atom.
Nuclear Fusion
electron lost 3.6 x 10-19 -barbie=]
Ultraviolet
The answer is (B) Emits a Photon of Radiation.
An excited electron releases a photon as it returns to ground state.
The energy is absorbed by the electrons because work needs to be done on the electrons to raise them to an excited state. Energy is stored in the electrons while they are in their excited state and would emit energy if they returned to their ground state.
A packet of light energy is called a photon.
A photon is emitted when an electron falls from a higher to lower orbital. A photon is an elementary particles, the quantum of light and all other forms of electromagnetic radiation.
a photon is emitted or absorbed
electron lost 3.6 x 10-19 -barbie=]
Ultraviolet
They are specialized diodes. When an electron jumps the "forbidden zone" , a photon is emitted.
Matter tends to exist in its energy ground state. Both the nucleus and the electron cloud have energy states, representing different levels of excitation. The tendency is to return to ground or lowest state, and when that happens, a photon is emitted with charge representing the energy transition. When the photon comes from the nucleus, it is a gamma ray; when the photon comes from the electron cloud, it is an x-ray.
In beta- decay, an electron and an electron antineutrino is emitted. In beta+ decay, a positron and an electron neutrino is emitted. In both types of decay, if the nucleus is left in an excited state, when it comes back down to ground state, it emits a photon in the form of a gamma ray. In beta+ decay that is precipitated by K Capture, the electron cloud is left in a multi level excited state, and it has one or (usually) more drops in energy as it returns to ground state, each drop emitting a photon in the form of an x-ray.
The answer is (B) Emits a Photon of Radiation.
An excited electron releases a photon as it returns to ground state.
Energy must be emitted for an electron to return to the ground state. This energy typically occurs in the form of a photon--a particle/wavelet of light. Flourescent bulbs, for example, conduct a current through a gas knocking electrons into higher, more exicted orbits. As the electrons decay into lower orbits, light is emitted, producing the flourescent glow.
The energy difference, between two energy levels, is emitted as a photon, when the electron "falls down" to a lower energy level.