BONDING AND NAMING * * Metals form cations and nonmetals form anions to attain a stable valence electron structure. * This stable structure often consists of two s and six…

Slide 1Emission I: Atomic Physics for X-ray Astronomy Randall K. Smith Johns Hopkins University NASA/GSFC Slide 2 Introduction Atoms only: Molecules (and dust grains) are…

Hein and Arena 6 valence electrons: the electrons that occupy the outermost energy level of an atom. valence electrons are responsible for the electron activity that occurs…

* * Periodic Trends in Atomic Properties * Characteristic properties and trends of the elements are the basis of the periodic table’s design. * These trends allow us to…

Atomic Physics for X-ray Astronomy: A Primer Randall K. Smith Chandra X-ray Center Introduction Atoms only: Molecules (and dust grains) are only observable in absorption…

Emission I: Atomic Physics for X-ray Astronomy Randall K. Smith Johns Hopkins University NASA/GSFC Introduction Atoms only: Molecules (and dust grains) are only observable…