Difference between Excitation Potential and Ionization Potential

Main difference

The main difference between excitation and ionization potential is that excitation describes the movement of an electron from a lower energy level to a higher energy level, while ionization potential describes the total removal of an electron from a higher energy level. of energy…

Excitation Potential vs. Ionization

Excitation is considered as the addition of a different amount of energy to a specific system, such as an atom, a molecule or an atomic nucleus; On the other hand, the ionization potential is considered as the amount of energy required to remove the most loosely bound electrons from a neutral gaseous system.

The main purpose of excitation is to explain the movement of an electron from a lower energy level to a higher energy level; rather, the purpose of the ionization potential is to account for the removal of a specific electron entirely from an energy level. Excitation usually needs energy from the surrounding environment, but soon this energy is released in the form of photons, while the ionization potential absorbs its energy from the atom and this energy is not released again.

Ultimately, the excitation produces an excited state that is generally unstable and has a short lifetime; on the other hand, in the end, the ionization potential produces a cation that often acts as a stable ion after the removal of an electron. The excitation energy is always equal to the difference in energies of the electrons present in the two orbits; on the other hand, the ionization potential is present in such quantity that the electron pulls it out of the atom, but the kinetic energy outside the atom is zero.

An electron jumps from a lower energy level to a higher energy level but does not leave it excited, so the charge on the atom does not change; on the contrary, in the ionization potential, an electron is so excited that it actually decays from the atom and then increases the charge of the atom. Excitation is the step that is present in the ionization potential, while the ionization potential is the entire process.

Comparison chart

Excitement ionization potential
The energy required for an electron to go from its orbit to the higher energy orbit is known as the excitation process. The minimum amount of energy required to free an electron from the ground state of the atom is known as the ionization potential.
Considered as
Considered as the addition of a different amount of energy to a specific system, such as an atom, a molecule or an atomic nucleus. Considered as the amount of energy required to remove the most loosely bound electrons from a neutral gaseous system.
Purpose
Explain the movement of an electron from a lower energy level to a higher energy level. Explain the removal of a specific electron completely from an energy level.
energy shift
Usually it needs energy from the surrounding environment, but soon this energy is released in the form of photons. It absorbed its energy from the atom, and this energy is not released again.
End product stability
It produces an excited state that is generally unstable and has a short lifespan. It produces a cation that often acts as a stable ion after the removal of an electron.
energy difference
It is always equal to the difference in energies of the electrons present in the two orbits. Present in such quantity that the electron pulls it out of the atom but the kinetic energy outside the atom is zero.
change of charge
An electron jumps from a lower energy level to a higher energy level but does not leave it, so the charge on the atom does not change. An electron is so excited that it actually decays from the atom and then increases the charge of the atom.
Importance in energy levels
The step that is present at the ionization potential. The whole process

What is excitement?

Excitation is known as the result of the delivery of energy to an electron for its transmission from a lower level to a higher energy level. The electron does not leave the atom and will continue to orbit the nucleus until the electrical energy level is greater than the ionization energy level of the atom.

Excitation generally causes the energy of the system to change from a ground energy state to an excited energy state. On excitation, excited systems contain distinct values ​​of the distribution of energies because the excitation process occurs only when an atom absorbs a specific part of the energy.

The same excitation process is for protons, electrons, and neutrons present in atomic nuclei can be excited when given the required amount of energy. Compared to electrons, the energy of the nucleus is very high and a large amount of energy is required to move it to an excited state.

What is the ionization potential?

When the electron is given enough energy to remove it from the energy levels, this is known as the ionization potential. A gas contains an electric current that is present in fluorescent tubes that passes through it and causes the electrons to become excited and ionized. As a result, when the electrons move back to the ground state, they release energy in the form of UV radiation which is absorbed by the coating on the light tube and then emits visible light.

The removal of loose electrons is an endothermic process (the process in which energy is absorbed from the outside). Therefore, the ionization potential contains a positive value. In the most general form, the closer the electron is to the atomic nucleus, the higher the ionization potential.

In the periodic table, the ionization energy tends to decrease down the group due to increasing atomic size. As the size of the atom increases, the attraction between the electron farthest from the nucleus decreases and thus it is easy to remove that electron. Since less energy is required to remove the electron, the ionization energy decreases.

Key differences

  1. The energy required for the movement of an electron from one energy level to another energy level is known as the excited state of that electron; On the other hand, the energy required for electron binder translation from the first level to infinity is known as the ionization potential.
  2. The excitation of electrons are the steps in the entire energy level process, while the ionization potential of an electron describes the entire energy level process.
  3. On excitation, the charge present in the atom does not change when an electron jumps from a higher energy level to a lower energy level but does not leave the atom; on the contrary, in the ionization potential, the charge present in the atom changes because the electron becomes so excited that it is released from the atom.
  4. The excitation of an electron is the addition of a separate amount of energy to a specific system, such as an atom, a molecule, or an atomic nucleus, while the ionization potential is the amount of energy required to remove the more loosely bound electrons from it. a Neutral gaseous arrangement.

Final Thought

The above discussion concludes that excitation and ionization potential are the two terms used to explain the correlation between energy changes and energy behavior. The difference between them is that excitation is used to explain the transmission of an electron from a lower energy level to a higher energy level, while ionization potential is used to explain the complete removal of an electron from the energy level. .

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button