Which of the following is correct order of electron affinity?
Therefore, the correct order of electron affinity is Cl > F > Br.
What is greatest electron affinity?
Fluorine is a small atom with a small amount of space available in its 2p orbital. Therefore, chlorine has a higher electron affinity than fluorine, and this orbital structure causes it to have the highest electron affinity of all of the elements.
Why is the second electron gain enthalpy of oxygen is positive?
When an electron is added to an isolated oxygen atom, it becomes uninegative ion. Now if one more electron has to be added, then it will experience a repulsive force or columbic force of repulsion. Therefore , the second electron gain enthalpy is positive for oxygen.
What is the importance of electron affinity?
Third in importance for bond formation after size and ionization energy is the energy change accompanying the attachment of electrons to a neutral atom. This energy is expressed as the electron affinity, which is the energy released when an electron is attached to an atom of the element.
What is the other name of electron affinity?
Electron gain enthalpy
Why 1st electron affinity is negative and 2nd is positive?
First electron affinities are typically negative values. This is because when an electron is added to a neutral atom, energy is released in an exothermic process. The second electron affinity is a positive value as energy is needed to add a second electron to an ion with a pre-existing negative charge.
Why the second electron affinity of oxygen is negative?
You are forcing an electron into an already negative ion. It’s not going to go in willingly! The positive sign shows that you have to put in energy to perform this change. The second electron affinity of oxygen is particularly high because the electron is being forced into a small, very electron-dense space.
Why the second EA of oxygen is highly endothermic?
There is energy released in bringing in the negative electron up to the positive nucleus. Because the electron is negatively charged you can see that there will be repulsion between the ion and the electron making the process endothermic, hence the positive value.
Which has higher EA O or O?
If electron affinity is favorable, energy is released upon adding an electron, meaning it’s negatively-signed. However, since EA2 is positive, it means it requires energy to add that electron to O− ! Therefore, the “greater” electron affinity (really, the more favorable electron affinity) is with O .
Why is O+ more electronegative than O?
Keeping this in mind, the oxygen atom with positive charge has an electrons which are less than the number of protons in nucleus. Whereas, in Oxygen without charge there are equal protons and neutrons so the stability already there, thus the electronegativity of Oxygen with positive charge is more than neutral charge.
Which will have the maximum value of electron affinity O X?
Answer: O- will have maximum value of electron affinity.
Which will have the minimum value of electron affinity?
oxygen
What is Nitrogens electron affinity?
Electron Affinity of Nitrogen is 7 kJ/mol. Electronegativity of Nitrogen is 3.04.