Chemistry 5 Monday, September 6, 2006

Chemistry 5 Monday, September 6, 2006 - 4p 3 6 2-2, -1, 0,...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Wednesday, September 06, 2006 Chemistry SECOND PART OF COURSE DESCRIBE MORE FULLY o QUANTUM THEORY o ATOMIC PROPERTIES QUANTUM LEAP How do we explain the wave/par hole duality of electrons? How are e- distributed in space? TEXT : Sections 2.4-2.6 QUANTUM THEORY 1. Standing waves a. As frequency increases, wavelength decreases b. Quantized c. Math functions describe wave d. Where the black crosses blue you get a node e. As frequency increases (energy increases), # nodes increases f. Waves define 3-d region in space 2. deBroglie a. model e- as standing wave b. note: 3- do diffract (wave prop) 3. Schrödinger a. Developed “wave functions” b. Relate E with wave functions c. Define a 3-d region in space “orbital” QUANUTUM NUMBRS n: principle q. n. = size l: angular momentum q. n. = shape m l : magnetic q. n. = direction n, l, m l defines a region in space (an orbital) m s : spin q. n. = + ½ or – ½ 2 e- in each orbital
Background image of page 1

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

View Full DocumentRight Arrow Icon
Wednesday, September 06, 2006 n l m symbol # orbital # e- sum of #e- 1 0 0 1s 1 2 2 2 0 0 2s 1 2 1 -1, 0, +1 2p 3 6 8 3 0 0 3s 1 2 1 -1, 0, +1 3p 3 6 18 2 -2, -1, 0, +1, +2 3d 5 10 4 0 0 4s 1 2 1 -1, 0, +1
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 4p 3 6 2-2, -1, 0, +1, +2 4d 5 10 32 3-3, -2, -1, 0, +1, +2, +3 4f 7 14 After f the alphabet starts from ghijk ORBITALS z 1. Drawn to show shape no outer surface 2. S-orbital spherical y a. 1 s function has greater intensity closer to nucleus x z x y 1s 2s size increases as n increases 3s Pz Py Px 3. p-orbital along x, y, z a. contain one planer node b. shading indicates the signing of a web function shading = sign of wave function 4. d-orbital more complex 5. new model of atom 6. Philosophical problem a. diff reality on atomic scale b. e- has been stretch c. pictures come from waves not particles Wednesday, September 06, 2006 Bohr n = 3 -----Quantum (t e-) n = 3 ----- 3s 3p 3d n = 2 -----n = 2 ----- 2s 2p n = 1 -----n = 1 ----- 1s GOALS List sum and differences between Bohr and quantum models Determine the # of orbital and e- in each in level and n/1 sublevel Stretch s and p orbital...
View Full Document

Page1 / 3

Chemistry 5 Monday, September 6, 2006 - 4p 3 6 2-2, -1, 0,...

This preview shows document pages 1 - 3. Sign up to view the full document.

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