2 Quantum Mechanical Model The model of the atom that treats electrons as wavesLike Bohr the quantum model limits an electron to certain energy levelsUnlike Bohr’s model it makes no attempt to describe an electrons path
3 VocabularyAtomic Orbital – the 3D region around the nucleus that the wave function predictsPrincipal quantum number (n) – indicates the relative size and energy of atomic orbitalsPrincipal energy level – energy levels indicated by the principal quantum levelsEnergy sublevels – sublevels in principal energy levels
4 Atomic Orbitals Orbital shapes Orbitals increase in size as principal quantum number increasess, p, d, and f
6 Energy SublevelsThe number of energy sublevels increases as the principal quantum number increasesDesignated by s, p, d, and f
7 Principal Quantum Number (n) Sublevels (types of orbitals) present Number of OrbitalsTotal number of Orbitals related to Principal energy level1s2p34d59f716
8 Review Questions Draw and Label the parts of a wave. What is the relationship between wavelength and frequency?List the electromagnetic spectrum from lowest frequency to highest frequency.What is the frequency and energy of a microwave m in length?Draw an atom in the ground state and the excited state.Describe the photoelectric effect.Describe how an emission spectra is formed.Compare and Contrast the Bohr Model and the Quantum Mechanical Model.