Journal Entry:
What is the electron configuration for Fe+3? What evidence can be used to support electron configurations?
Learning Intentions
You will understand why the classical shell model of an atom has been refined to the quantum mechanical model using data from line spectra, and ionization energy as seen in PES.
You will understand what PES is and how it support the quantum mechanical model for the atom.
Closing Task:
You can analyze Photoelectron Spectroscopy (PES) graphs to determine element being displayed.
Content Standards being covered:
The currently accepted best model of the atom is based on the quantum mechanical model. (EK 1.C.2)
The interaction of electromagnetic waves or light with matter is a powerful means to probe the structure of atoms and molecules and to measure their concentration. (EK 1.D.3)
The electronic structure of the atom can be described using an electron configuration that reflects the concept of electrons in quantized energy levels or shells, the energetics of the electron in the atom can be understood by consideration of Coulomb's law (EK 1.B.2)
Many properties of atoms exhibit periodic trends that are reflective of the periodicity of electronic structure (EK 1.C.1)