|
|
|
|
|
IsoelectronicWhen an atom, radical, or ion has an equal number of electrons or has the same number of electrons when compared to the atoms of another element, the two species are called "isoelectronic". Basically, if two atoms/ions have the same number of electrons they are isoelectronic to each other, unless there are electrons present. When ions are formed through the loss of electrons, the atom that is to become the ion loses electrons from its highest energy level (its valence shell) first. So, the configuration for Ga is Ar4s23d104p1, but the configuration for Ga+3 is Ar3d10. The electrons are lost from the 4p and the 4s subshells first, then from the 3d. Examples: - When Na+=He2s22p6 it is isoelectronic to Ne=He2s22p6
- When Cl-=Ne3s23p6 it is isoelectronic to Ar=Ne3s23p6
- Gallium+3 is not isoelectronic to Nickel, even though both have 28 electrons
- When Ga+3 Ar3d10 is not isoelectronic to Ar4s23d8
Further Information: See atom, iso, isoelectricity, electronic, electron and electronic configuration.
|
 |
|
| Copyright 2005-2009 OnPedia.com. All Rights Reserved |
|
|