Lecture3 Atoms Electrons and Bonding

Silicon insulator or conductor diamond lattice 2d view

Info iconThis preview shows page 1. Sign up to view the full content.

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

Unformatted text preview: 2 Spring 2013 Ionic Bonding in NaCl Crystal (Insulator) How does ionic compound dissolved in water? EE 332 Spring 2013 Metallic Bonding Metal Crystal (Conductor) Metallic Bonding in Metal Crystal (Conductor) Conductive Malleable EE 332 Spring 2013 Metal Crystal EE 332 Spring 2013 Covalent Bonding Crystal Covalent Bonding in Siin Si Crystal Simple “flattened” model of Si crystal Sharing of valence electrons (H2O) EE 332 Spring 2013 Silicon : Insulator or Semiconductor? Silicon: Insulator or Conductor? Diamond lattice 2D view of covalent bonding E440 Prof. 4 Each atom hasEric Pop nearest neighbor atoms: All valence electrons four are involved in bonding. (Insulator??) But, it doesn’t require too much energy to break an electron out of a bond and thereby free it to move. (Semiconductor !!!) EE 332 Spring 2013 Bohr Model of Si Atom Bohr Model of IsolatedIsolated Si Atom Energy levels of electrons in silicon Orbital structure Electronic structure silicon: 1s22s22p63s23p2 Note: inner shell electrons screen outer shell electrons from the positive cha...
View Full Document

This document was uploaded on 02/18/2014.

Ask a homework question - tutors are online