lecture2 - Chapter 2 Chapter 2 Chapter 2 - Bonding...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon

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

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

Unformatted text preview: Chapter 2 Chapter 2 Chapter 2 - Bonding & Properties Bonding & Properties Atomic Structure & Bonding Atomic Structure & Bonding Chapter 2 - Jian-Min Zuo, Miyoung Kim, Michael OKeefe & John Spence Arizona State University, 1999 Published in Nature Issues to Address Issues to Address Structure of the atom? What causes/promotes bonding? Chapter 2 - What types of bonding are there? What properties are controlled by bonding? Atomic Atomic Structure Structure atom electrons 9.11 x 10-31 kg protons neutrons atomic number = # of protons in nucleus of atom = # of electrons of neutral species } 1.67 x 10-27 kg Chapter 2 - A : atomic mass unit = amu = 1/12 mass of 12 C Atomic wt = wt of 6.023 x 10 23 molecules or atoms 1 amu/atom = 1g/mol C 12.011 H 1.008 etc. Atomic Structure Atomic Structure Valence electrons determine all of the following properties: 1) Chemical Chapter 2 - 1) Chemical 2) Electrical 3) Thermal 4) Optical 5) Mechanical Important Numbers Important Numbers Mass of proton & neutron = 1.66 x 10-24 gm Charge on proton = +1.60 x 10-19 C Chapter 2 - Mass of electron = 0.911 x 10-27 gm Charge on electron = -1.60 x 10-19 C Avogadro's number = 6.023 x 10 +23 (atoms/mole) Importance of Electronic Structure Importance of Electronic Structure Outer ( valence ) electrons easiest to remove, causing the atom to be ionized Inner electrons tightly bound Chapter 2 - Valence electrons are the ones participating in bonding Quantum Mechanics describes allowed energy states Atomic Structure Atomic Structure Bohr model: Electrons orbiting the massive nucleus Nucleus contains protons (charged) & neutrons (uncharged) orbital electrons: Chapter 2 - Principal quantum numbers represent solutions to Schrdinger's equation Z= # protons, N= # neutrons, Atomic Mass = A = Z + N n = principal quantum number n=3 2 1 Nucleus: Electronic Structure Electronic Structure Electrons have wavelike and particulate properties. This means that electrons are in orbitals defined by a probability. Each orbital at discrete energy level determined by Chapter 2 - Each orbital at discrete energy level determined by quantum numbers. Quantum # Designation n = principal (energy level-shell) K , L , M , N , O (1, 2, 3, etc.) l = subsidiary (orbitals) s , p , d , f (0, 1, 2, 3,, n-1) m l = magnetic 1, 3, 5, 7 (-l to +l) m s = spin , - Electron Energy States Electron Energy States 3 d 4 p 4 d N-shell n = 4 have discrete energy states tend to occupy lowest available energy state. Electrons... Chapter 2 - 1 s 2 s 2 p K-shell n = 1 L-shell n = 2 3 s 3 p M-shell n = 3 4 s Energy E vs. Principal Quantum Number n E vs. Principal Quantum Number n Chapter 2 - Designation of Electron Shells & Designation of Electron Shells & Subshells Subshells Chapter 2 - Atomic Atomic Orbitals Orbitals as Probability as Probability Distribution Functions Distribution Functions Chapter 2 - Concept of Degeneracy...
View Full Document

This note was uploaded on 02/08/2011 for the course GENERAL EN 407 taught by Professor Akdogan during the Fall '10 term at Rutgers.

Page1 / 67

lecture2 - Chapter 2 Chapter 2 Chapter 2 - Bonding...

This preview shows document pages 1 - 14. Sign up to view the full document.

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