Table of Contents
Why electron affinity of oxygen is less than fluorine?
As you might have noticed, the first electron affinity of oxygen (-142 kJ mol-1) is less than that of fluorine (-328 kJ mol-1). That means that the net pull from the nucleus is less in Group 6 than in Group 7, and so the electron affinities are less.
Does fluorine have the most electron affinity?
Fluorine has highest electron affinity in the periodic table.
Why is fluorine not the most electron affinity?
Therefore, repulsion among the electrons will be more in the 2p-shell of fluorine than 3p-subshell in chlorine. Since, energy released during the formation of Cl− (g) ion is more than that released in case of F−(g) ion, the electron affinity of chlorine is more than that of fluorine.
Which has more electron affinity oxygen or SE?
Electron affinity is characterised as when an electron is applied to the atom to form a negative ion, the shift in energy (in kJ / mol) of a neutral atom (in the gaseous phase). So, the order of electron affinity must be highest in the oxygen and least in selenium according to electron gain enthalpy.
What is the electron affinity for oxygen?
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 | 8 |
---|---|
Element | 16O |
Name | Oxygen |
Electron affinity (eV) | 1.461 113 6(9) |
Electron affinity (kJ/mol) | 140.976 0(2) |
Why does fluorine have a higher electron affinity than oxygen?
This also explains why fluorine has a larger electron affinity than oxygen, as the electron brought in from the environment is being added to the 2pz orbital of fluorine which is closer to the nucleus (than the outer orbital of an oxygen atom) at a lower energy level where it becomes the outermost electron of the F- anion.
Why is 09-f Florine greater than 08-o oxygen?
So, 09-F Florine is greater than 08-O Oxygen. 08-O Oxygen has two open-paths (negative valance of -2) for receiving connections (blue) via the outer electron from other electrons to form a bond. But, you can see that the other electrons are well-spaced.
Why does oxygen have a lower electron affinity than sulfur and selenium?
I’ve read that oxygen has a lower electron affinity (as shown the picture below), because it has a smaller atomic radius than sulfur and thus the electrons experience significant electron-electron repulsion. However, I was wondering… Why is this not the case for sulfur and selenium or chlorine and bromine?
Which of the following elements has the most electrons affinity?
Florine has the most electrons affinity than Oxygen as Oxygen is group 6 element which has 1 less proton in the nucleus than Florine in group 7 elements. The number of nucleus is less in group 6 than in group 7.