Lecture 7, Atoms

Announcements

The Elements

  1. Introduction
  2. Common Elements (Overhead)
  3. 112 Known Elements

Symbols for the Elements

  1. Table 4.3, page 92 (Overhead)
  2. Know up to Kr

The Structure of the Atom

Subatomic Particles
Particle Charge Mass Symbol Significance
Proton +1 1 u 11p Atomic Number
Neutron 0 1 u 10n # neutron + # proton = isotope mass
Electron -1 0 u (0.0005485799 u) 0-1e charge of atom

Isotopes

  1. Mass Spectrometry (overhead)
  2. 1H Hydrogen
  3. 2H Deuterium
  4. 3H Tritium
  5. 14C
  6. 19F
  7. 266Mt
  8. 277112
  9. Antimony (overhead)
  10. Neon (overhead)
  11. Chlorine (overhead)

The Periodic Table (Overhead)

  1. Metals
  2. Non-Metals
  3. Alkali Metals
  4. Alkaline Earth Metals
  5. Transition Metals
  6. Halogens
  7. Nobel Gases
  8. Lanthenides
  9. Actinides

Natural States of Elements

  1. Nobel Gases
  2. Diatomic Molecules
  3. Allotropes

Ions

  1. Number of electrons
  2. Name of Anions
  3. Ion Charges and Periodic Table (Overhead)

This page is maintained by
Scott Van Bramer
Department of Chemistry
Widener University
Chester, PA 19013

Please send any comments, corrections, or suggestions to svanbram@science.widener.edu.

This page has been accessed times since 1/5 /96 .
Last Updated 11/1/02