1 / 10

Understanding Periodic Table Elements & Configurations

Explore short-hand configurations, valence electrons, dot diagrams, and history of key elements like Molybdenum, Selenium, Strontium, Ruthenium, and Antimony. Learn about Mendeleev's contributions and the modern periodic table layout. Understand major groups: metals, nonmetals, and metalloids.

ashley
Télécharger la présentation

Understanding Periodic Table Elements & Configurations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Daily SciencePg. 44 • Write the short hand configurations for the following elements: • Molybdenum, Selenium, Strontium, Ruthenium, and Antimony • Write the number of valence electrons the previous elements have • Based on its group, how many valence electrons will Bromine have? Prove this. • Draw the electron dot diagram for Oxygen and Silicon

  2. The Periodic Table Pg.43

  3. History • http://www.youtube.com/watch?v=0RRVV4Diomg

  4. Discovery • Only knew 23 elements in 1790 • Discovery of electricity brought change • Dmitri Mendeleev demonstrated a connection between atomic mass and elemental properties (1869) • Saw a repeating pattern • Left blank spaces where undiscovered elements should go (Sc, Ge, and Ga) • Henry Moseley rearranged the table according to atomic number • A clear repetition of repeating physical and chemical patterns emerged. Called periodic law

  5. The Modern Periodic Table • The columns on the periodic table are called groups (or families) • Elements in the same group have similar chemical and physical properties • The rows are called periods • Main group elements (representative elements): Groups 1-2, 13-18 • Transition elements: Groups 3-12 • Sometimes see a number/letter system • Can find elements based on group and period

  6. Major groups • There are 3 major groups on the periodic table: • Metals • Nonmetals • Metalloids (or semiconductors)

  7. Metal • The metals are on the left side of the periodic table • Malleable and ductile • Shiny • Good conductors of heat and electricity • They further broken into 4 categories • Alkali metals • Alkaline Earth metals • Transition elements • Inner transition elements

  8. Nonmetals • Are on the right side of the stair-step (except H) • Can be gases • Brittle and dull • Poor conductors of heat and electricity • Br only nonmetal that is a liquid at room temp • Can be broken into smaller categories • Halogens • Noble gases • Carbon group

  9. Metalloids • Border the stair step line • Have properties of both metals and nonmetals • Si and Ge most important as they are used in computer chips

More Related