Nhi Vo 4G wrote:What is the difference between electron affinity and electronegativity?
They seem similar to me.
If you would review the notes under "electron configuration and periodicity of atomic properties" and "ionic vs. covalent bonds" and read sections 2.11 Electron Affinity and 3.12 Correcting the Covalent Model: Electronegativity, you would see that you're looking at the same phenomenon from two different perspectives:Electron affinity
is the energy released when an electron is added to a neutral gas-phase atom.
if this is positive
, energy is released
when electron is added to atom.
if this is negative
, energy must be supplied
to push an electron onto an atom. Electronegativity
is the tendency of an atom to pull electrons (specifically when it is part
of a molecule.)
When this is high
, electrons tend to be pulled
by the atom.
when this is low
, electrons tend to be pushed
away from the atom.
Put simply, electron affinity and electronegativity are directly
related. If electron affinity is positive (and/or high), electronegativity is high, and vice versa.
Hope that helps~