Atomic Structure


Chapter Objectives
At the end of this unit students will be able to
1.  decribe Democritus's ideas about atoms..
2.  compare and contrast the atomic theories of Dalton, Thomson, Rutherford, and Bohr
3.  distintuish between elements and isotopes.
4.  calculate the number of neutrons in atoms.
5.  calculate the atomic mass of an element.
6.  describe the energies and positions of electrons according tothe quantum mechanical model
.
7.  describe how the shapes of orbitals related to different sublevels differ.
8.  write electron configurations for representative elements.
9.  describe the relationship between wavelength and frequency of light.
Key Terms
atom
atomic mass
atomic mass unit (amu)
atomic number
cathode ray
electron
group
isotopes
mass number
neutron
nucleus
proton
period
periodic table
amplitue
atomic emission spectrum
atomic orbital
electromagnetic radiation
electron confituration
energy levels
frequency
ground state
Heisenbery uncertainty principle
Pauli exclusion principle
photon
quantum
spectrum
wavelength