Ch_7-2_Intro_to_QM (1)

Ch_7-2_Intro_to_QM (1) - QUANTUM MECHANICS Scanning...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Zumdahl Scanning tunneling micrograph showing a ring of 48 Fe atoms on a copper surface . QUANTUM MECHANICS
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Quantum mechanics was developed because classical mechanics did not work in some situations including for atoms and molecules. Why Quantum Mechanics? Difficulties already discussed: Dual nature of light and matter. Quantization of energy levels for oscillators. Ultraviolet catastrophe Photoelectric effect Another difficulty: Emission and absorption spectra in atoms and molecules Classically: all energies allowed. Observed: only certain energies allowed (discrete or quantized energies ) FE2
Background image of page 2
EMISSION SPECTRA ABSORPTION SPECTRUM Continuous
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Rydberg equation: and n a and n b are whole positive numbers with n a < n b . EXPERIMENTAL OBSERVATIONS FOR H ATOM where R h = Rydberg constant = 1.097 x 10 7 m- 1 . (Empirical formula) Light of this wavelength is green.
Background image of page 4
EARLY THEORY TO EXPLAIN RYDBERG EQUATION FOR H ATOM Bohr’s Model of the Atom: 1. The electron moves in circular orbits about the proton under the influence of the Coulomb force of attraction.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/14/2010 for the course CHEM 230 taught by Professor Desilva during the Spring '08 term at Montclair.

Page1 / 9

Ch_7-2_Intro_to_QM (1) - QUANTUM MECHANICS Scanning...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online