Difference between binding energy and ionization energy

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Thread starter Ado
Start date Sep 7, 2017
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Binding energy Difference Energy Ionization Ionization energy

In summary, binding energy is the energy needed to hold together the nucleus of an atom, while ionization energy is the energy required to remove an electron from an atom or molecule. These energies are inversely related, with a higher binding energy resulting in a lower ionization energy. The main difference between them is that binding energy refers to the forces within the nucleus, while ionization energy refers to the forces between the nucleus and electrons. These concepts are important in understanding the properties of atoms and molecules and have practical applications in various fields.

Sep 7, 2017

Ado

Hi!
I wonder since some time why ionization energies are not equal to binding energies.

For instance, take the case of aluminum in the following configuration [Ne]3s²3p

Ionization energy ~ 6 eV
Binding energy ~ 5 eV

Where does this difference come from ?

Thanks in advance

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Sep 7, 2017

DrClaude

Mentor

What is your source for these numbers (especially the binding energy)?

1. What is binding energy?

Binding energy is the amount of energy required to hold together the nucleus of an atom. It is the sum of all the energy needed to overcome the attractive and repulsive forces between the protons and neutrons in the nucleus.

2. What is ionization energy?

Ionization energy is the minimum amount of energy required to remove an electron from an atom or molecule, resulting in the formation of an ion. It is a measure of the strength of the attraction between the nucleus and the outermost electrons.

3. How are binding energy and ionization energy related?

Binding energy and ionization energy are inversely related. As the binding energy of an atom increases, the ionization energy decreases. This is because a higher binding energy means the electrons are held more tightly to the nucleus, making it more difficult to remove them.

4. What is the main difference between binding energy and ionization energy?

The main difference between binding energy and ionization energy is that binding energy refers to the forces that hold the nucleus of an atom together, while ionization energy refers to the forces that hold the electrons in orbit around the nucleus.

5. Why are binding energy and ionization energy important?

Binding energy and ionization energy are important concepts in understanding the properties of atoms and molecules. They help to explain why elements have different chemical and physical properties and how they interact with each other. In addition, these energies are crucial in many technological applications, such as nuclear power and chemical reactions.