CHEM 1030 Lecture 8: Chapter 3: Atomic Structure

• School: Auburn University
• Department: Chemistry
• Course: CHEM 1030
• Professor: Ellen Patricia Broering

Document Summary

Chem 1030 - lecture 8 - chapter 3: atomic structure: explaining the properties of. Ions of the main group elements: cation- removes electrons from the valence electron orbital, anion- adds electrons to the valence orbital. Na -> na+ + e- f + e- -> f- [ne]3s1 -> [ne] + e- [he]2s22p5 + e- -> [he]2s22p6 = [ne: na+ and f- are isoelectronic (along with neon) Isoelectronic- two elements having the same electron configuration. Determine the electron configuration of each of the following ions: mg2+, cl-, ca2+, and. O2- [he]2s22p6 (same as ne: mg2+ and o2- are isoelectric with ne, cl- and ca2+ are isoelectric with ar. Transition metal cations: electrons in orbitals with the highest n values ionize first. Example: even if 3d electrons are the last filled, the transition metal cations will lose 4s electrons first: transition metals can still lose d electrons after they lose the s electrons.