Table of Contents
- 1 What causes an increase in electron affinity?
- 2 Why does nitrogen have a high electron affinity?
- 3 Why is nitrogen electron affinity?
- 4 What is the electron affinity of fluorine?
- 5 Does fluorine have more electron affinity than nitrogen?
- 6 Why does electron affinity decrease from top to bottom and increase left to right?
- 7 What are the factors affecting electron affinity?
- 8 Why is the electron affinity of fluorine not as negative as chlorine?
- 9 How does electron affinity affect the energy of an atom?
- 10 What is the difference between first and second electron affinity?
What causes an increase in electron affinity?
Electron affinity increases upward for the groups and from left to right across periods of a periodic table because the electrons added to energy levels become closer to the nucleus, thus a stronger attraction between the nucleus and its electrons.
Why does nitrogen have a high electron affinity?
Nitrogen has a half-filled 2p subshell, so that there is one electron in each orbital. This creates an unusually stable atom because of half-shell stability.
Why does electron affinity increase from bottom to top?
Lesson Summary The general trends of the electron affinity are that it increases from left to right across the periodic table due to an increase in the nuclear charge, and it increases from bottom to top due to the effect of atomic size.
Why is nitrogen electron affinity?
Thus,nitrogen have no electron affinity. Nitrogen has five electrons in its valence shell and when electron approaches to Nitrogen then electron loses half of its energy to exist in valence shell and then half of its remaining energy uses to dominate the repulsion of valence electrons . So net energy loss is zero .
What is the electron affinity of fluorine?
Electron affinity can be defined in two equivalent ways. First, as the energy that is released by adding an electron to an isolated gaseous atom….Elements.
| Z | 9 |
|---|---|
| Element | F |
| Name | Fluorine |
| Electron affinity (eV) | 3.401 189 8(24) |
| Electron affinity (kJ/mol) | 328.164 9(3) |
What is the electron affinity of nitrogen?
Electron affinity can be defined in two equivalent ways. First, as the energy that is released by adding an electron to an isolated gaseous atom….Elements.
| Z | 7 |
|---|---|
| Element | N |
| Name | Nitrogen |
| Electron affinity (eV) | -0.07 |
| Electron affinity (kJ/mol) | -6.8 |
Does fluorine have more electron affinity than nitrogen?
Since a half-filled “p” subshell is more stable, carbon has a greater affinity for an electron than nitrogen….Electron Affinity Trends.
| Element | Electron Affinity |
|---|---|
| Cl | -348.7 kJ/mole |
| F* | -327.8 kJ/mole |
Why does electron affinity decrease from top to bottom and increase left to right?
Electron affinity increases from left to right within a period. This is caused by the decrease in atomic radius. Electron affinity decreases from top to bottom within a group. This is caused by the increase in atomic radius.
Why electron affinity of nitrogen is endothermic?
When an electron is added to nitrogen it must pair up with an electron, and this repulsion elevates the energy of the N- ion slightly. Thus energy is required to “push” an electron onto a nitrogen atom, making the process endothermic.
What are the factors affecting electron affinity?
Various factors that affect electron affinity are atomic size, nuclear charge and the symmetry of the electronic configuration. Atomic size: With increase in the atomic size, the distance between the nucleus and the incoming electron also increases.
Why is the electron affinity of fluorine not as negative as chlorine?
I say the reason why the electron affinity of fluorine is not as negative as chlorine and that of O is not as negative as S is because of the electron repulsions in the small compact atoms keep the added electrons from being tightly bound as we might expect. . . Share Improve this answer Follow edited Apr 29 ’16 at 5:19
Why does nitrogen have a negative electron affinity?
This means that the incoming electron will experience significant repulsion compared with when it’s added to an empty orbital. As a result, you need energy to add an electron to nitrogen, and hence its electron affinity is actually negative.
How does electron affinity affect the energy of an atom?
The more negative the electron affinity value, the higher an atom’s affinity for electrons. The energy of an atom is stated when an atom loses or gains energy through chemical reactions that cause the loss or gain of electrons.
What is the difference between first and second electron affinity?
Thus first electron affinities are always negative whereas second electron affinity ( electron to negative ion ) is positive. The electron affinity is further discussed below: First Electron Affinity: Negative energy because energy is released. Second Electron Affinity: Positive energy because the energy needed is more than gained.