chapter9tro - CHEMISTRY 161 Chapter 9 Periodic Table of the...

Info iconThis preview shows pages 1–13. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEMISTRY 161 Chapter 9
Background image of page 1

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

View Full DocumentRight Arrow Icon
Periodic Table of the Elements chemical reactivity - valence electrons ns 1 ns 2 ns 2 np x
Background image of page 2
atoms combine to form compounds in an attempt to obtain a stable noble gas electron configuration THE OCTET RULE ns 2 np 6 Iso electronic
Background image of page 3

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

View Full DocumentRight Arrow Icon
2. ELECTRON SHARING 1. ELECTRON FULLY TRANSFERED IONIC BONDING COVALENT BONDING A + B → AB 2 Na(s) + Cl 2 (g) 2 NaCl(s) 2 H 2 (g) + O 2 (g) 2 H 2 O(l) EXP I
Background image of page 4
LEWIS MODEL OF BONDING Gilbert Lewis (1875-1946) LEWIS DOT SYMBOL DOT represents one valence electron H .
Background image of page 5

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

View Full DocumentRight Arrow Icon
with the exception of He, the main group number represents number of ‘dots’ . . . . . . . . .. only valence electron are considered
Background image of page 6
electron transfer IONIC BONDING Lewis Symbol 1 s 2 2 s 2 2 p 6 3s Ne core implied in symbol Na
Background image of page 7

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

View Full DocumentRight Arrow Icon
Lewis Symbol 1 s 2 2 s 2 2 p 6 3s 1 1 s 2 2 s 2 2 p 6 3s 3p Ne core implied in symbol Cl Na
Background image of page 8
Na + 1 s 2 2 s 2 2 p 6 1 s 2 2 s 2 2 p 6 3s 2 3p 6 the loss or gain of electrons(dots) until IONIC BONDING the formation of ionic bonds is represented in terms of Lewis symbols both species have reached an octet of electrons Cl Na Cl
Background image of page 9

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

View Full DocumentRight Arrow Icon
Cl Cl [Ne] 3s 2 3p 6 represents one orbital (Pauli: 2 electrons)
Background image of page 10
ions stack together in regular crystalline structures ionic solids typically 1. high melting and boiling points 2. brittle 3. form electrolyte solutions if they dissolve in water electrostatic interaction
Background image of page 11

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

View Full DocumentRight Arrow Icon
Li(s) + ½ F 2 (g) → LiF(s) lattice energy (up to few 1000 kJmol -1 ) enthalpy of formation Hess’s Law Li + (g) + F - (g) → LiF(s) Born-Haber Cycle
Background image of page 12
Image of page 13
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/15/2010 for the course CHEM 161 taught by Professor Casaschi,a during the Fall '08 term at University of Hawaii, Manoa.

Page1 / 45

chapter9tro - CHEMISTRY 161 Chapter 9 Periodic Table of the...

This preview shows document pages 1 - 13. Sign up to view the full document.

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