Counting Atoms in Unit Cells:

Slides:

Advertisements

Similar presentations

n l= 2 d sinΘ Bragg Equation

Advertisements

Fundamental Concepts Crystalline: Repeating/periodic array of atoms; each atom bonds to nearest neighbor atoms. Crystalline structure: Results in a lattice.

Chapter 5 Properties of Matters CHEMISTRY - DACS 1232

Intermolecular Forces and

Solids Ch.13. Solids Fixed, immobile (so to speak) Fixed, immobile (so to speak) Symmetry Symmetry Crystals Crystals So what’s the inner order? So what’s.

Lecture 4 The structure of crystalline solids L e a r n i n g O b j e c t i v es outcomes: 1.Describe the difference in atomic/molecular structure between.

Chapter 3 -1 ISSUES TO ADDRESS... How do atoms assemble into solid structures? How does the density of a material depend on its structure? When do material.

Sections 12.1 – 12.2 Types of Solids Metallic Solids Bill Vining SUNY Oneonta.

Structures of Solids. Glass (SiO 2 ) Crystal Noncrystal Solid.

C NOT ALL CRYSTALS ARE CREATED EQUAL: A HANDS-ON INVESTIGATION OF UNIT CELL STRUCTURES Susanne M. Dana Blacksburg High School 2013 VMI STEM Education Conference:

Chapter 3 The Structure of Crystalline Solids Session I

Shared by 8 unit cells Shared by 2 unit cells.

2D Packing Examples hole Answer the following questions for both packing diagrams. 1.Find the smallest unit that, if repeated, would give you the entire.

Solids New OWL Homework has been posted This week’s lab- Separation of Metal Ions.

Chapter 11 Properties of Liquids and Solids Formula  Lewis Structure  Electron Geometry  Molecular Geometry  Polarity  Intermolecular Forces  Properties.

Chapter 12: Solids. Types of Solids: Ionic Molecular Network: crystalline amorphous Metallic.

Chapter 12: Solids. Types of Solids: Ionic Molecular Network: crystalline amorphous Metallic.

Chapter 12: Solids. Types of Solids: Ionic Molecular Network: crystalline amorphous Metallic.

Chapter 3: Structures of Metals & Ceramics

Intermolecular Forces and Liquids and Solids Chapter 14.

Intermolecular Forces and Liquids and Solids Chapter 11 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Intermolecular Forces and

Copyright©2000 by Houghton Mifflin Company. All rights reserved. 1 Chemistry FIFTH EDITION Chapter 10 Liquids and Solids.

Example 4.1 The Effect of Temperature on Vacancy Concentrations

Logarithm Review ab = c, (a > 0, a ≠ 1) logac = b log c = log10c

Intermolecular Forces and Liquids and Solids Chapter 12 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Intermolecular Forces and Liquids and Solids Chapter 11 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Chapter 3: The Structure of Crystalline Solids

Objectives Packing fraction in: Simple cubic unit cell

An Introduction to Structures and Types of Solids

Sections 12.1 – 12.2 Types of Solids Metallic Solids.

Prentice Hall © 2003Chapter 11 Types of Solids Molecular Solidsex. CO 2, H 2 O, Ar Covalent-Network Solidsex. Diamond, quartz, SiO 2 Metallic Solidsex.

11.7 Structures of Solids Zek Zhang Kevin Nash, *Matt Coleman¯\_( ツ )_/¯ *yeah were not racist, the non-white is not last.

1 Intermolecular Forces and Liquids and Solids Chapter 11 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Unit 1 Fundamentals 1  Atomic Structure?  Crystal Structure?  Types of Crystals?

Intermolecular Forces and

Intermolecular Forces and

youtube. com/watch. v=WIoS7WJDZT8 youtube

Chapter 3: Structure of Metals and Ceramics

Liquids and Solids Chapter 10.

THE SPACE LATTICE AND UNIT CELLS CRYSTAL SYSTEMS AND BRAVAIS LATTICES.

CHAPTER 3: STRUCTURE OF CRYSTALLINE SOLIDS

Intermolecular Forces and

Intermolecular Forces and

X Ray Diffraction © D Hoult 2009.

Crystallography and Structure

Chapter 1 Crystallography

Unit Cells Chapter 3.

Areal fraction of atoms on (111) plane of BCC crystal

Intermolecular Forces and Liquids and Solids

Solid state (Calculations & Doping)

Chapter 12 Unit Cells.

UNIT CELLS UNIT CELL – The smallest repeating unit of a crystalline solid EXP11-1 (of 11)

The Solid State.

Intermolecular Forces

Solid state (Calculations & Doping)

Solid Crystal Structures. (based on Chap

Bragg Diffraction 2dsinq = nl Bragg Equation

Solid Crystal Structures. (based on Chap

Solid Crystal Structures. (based on Chap

Crystalline Solids (고체의 결정구조)

Body centered cubic Note that each corner atom is in eight cubes so only 1/8 of the corner atom is in this cell Number of atoms = 1 center + 8 x 1/8 corners.

Meeting 1, Tuesday, Jan. 8, 2019 Goals for this Meeting:

Counting Atoms in Unit Cells:

X-Ray Diffraction Path Length Phase Difference

Presentation transcript:

Counting Atoms in Unit Cells: Inside: 1 Face: ½ Edge: ¼ Corner: 1/8

When silver crystallizes, it forms face-centered cubic cells When silver crystallizes, it forms face-centered cubic cells. The unit cell edge length is 409 pm. Calculate the density of silver.

Unit Cells, Dimensions and Measurements: Ca metal: Face centered cubic unit cell Density = 1.54 g/cm3 What is the radius of a Ca atom?

What fraction of a simple cubic unit cell is filled with atoms? What fraction of a face-centered cubic unit cell is filled with atoms?

Extra distance = BC + CD = 2d sinq = nl (Bragg Equation)

X rays of wavelength 0.154 nm are diffracted from a crystal at an angle of 14.170. Assuming that n = 1, what is the distance (in pm) between layers in the crystal?

Summary of types and properties of crystals