Electron Affinity

[Tracy Tran 3L]

How do you solve for electron affinity? The lecture audio was bad and I need some help understanding this process.

[Coline Luo 2E]

Hi! According to question 12 in the Week 2 Achieve HW, "the electron affinity is the difference in energy between the incident photons and the energy of the ejected electrons." The equation Eea = E(X)(g) = E(X-)(g) can also be used. Hope this helps!

[Michelle Argueta 1E]

Hi!
Electron affinity is defined as the amount of energy released when an electron is added to it to form a negative ion, where X(g) + e^- --> X^- (g) with the equation to solve for its Eea to be: Eea = E(X)(g) = E(X-)(g).

[Dana Sorensen 1C]

Electron affinity is the difference in energy between the the energy of incident photons and the energy of ejected electrons. The energy of the incident photons can be calculated using E = hv, and the energy of the ejected electrons can be found with 1/2mv^2. It is also important when solving the problems to keep track of your units (whether in Joules, eV, per atom, per mole, etc.).

[Sharlene Duong 3E]

Electron affinity is the energy released when electrons are added to an atom. In order to calculate electron affinity you can use this equation: Electron affinity = energy of the neutral atom - energy of the anion of the atom. You can also think about electron affinity as how easily an atom accepts electrons, therefore, when looking at the periodic table, the elements in the top right of the periodic table have higher electron affinity because they are more prone to accepting electrons since they have a negative charge than the elements on the left side of the periodic table that have a positive charge.

[Alyssa Cua 2J]

Electron affinity is the energy released when electrons are added to an atom. In order to calculate electron affinity you can use this equation: Electron affinity = energy of the neutral atom - energy of the anion of the atom. You can also think about electron affinity as how easily an atom accepts electrons, therefore, when looking at the periodic table, the elements in the top right of the periodic table have higher electron affinity because they are more prone to accepting electrons since they have a negative charge than the elements on the left side of the periodic table that have a positive charge.

This was super helpful! Thanks!