1 / 13

Periodic Table

Periodic Table. Dmitri Mendeleev , a Russian scientist, first arranged the periodic table in order of an element's atomic mass. The modern periodic table is arranged in order of atomic numbers. Three Main Parts: 1. Metals 2. Non-metals 3. Metalloids.

vinnie
Download Presentation

Periodic Table

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. Periodic Table

  2. Dmitri Mendeleev, a Russian scientist, first arranged the periodic table in order of an element's atomic mass. • The modern periodic table is arranged in order of atomic numbers.

  3. Three Main Parts: • 1. Metals • 2. Non-metals • 3. Metalloids

  4. 1. Metals-shiny,good conductor, malleable,ductile,solids (except mercury) • 2. Non-metals- dull, poor conductor, brittle (most),non-ductile, over half gases, one liquid (bromine), rest are solids

  5. 3. Metalloids : possess properties of both metals and non-metals • e.g. • Si -silicon, • Ge –germanium • Sb -antimony

  6. Chemical Symbols **are used to identify the different elements. • e.g. metals: Au -gold, Cu- Copper non-metals: O -oxygen,C-carbon • - can all be found organised in a periodic table.

  7. The periodic table has: • Periods: horizontal rows • Groups: vertical columns • families: possess similar chemical properties

  8. Group 1: • Alkali Metals (Li, Na, K, Rb, Cs, Fr) • soft, malleable, high lustre • highly reactive (especially with water and halogens) • Video clip http://www.youtube.com/watch?v=m55kgyApYrY

  9. Group 2: • Alkali Earth Metals (Be, Mg, Ca, Sr, Ba, Ra) • reactive, but not as reactive as the alkali metals • forms salts with the halogens

  10. Group 17: • Halogens (F, Cl, Br, I, At) • "salt" formers • very reactive and toxic

  11. Groups 3-12 • Transition Metals • e.g. Fe, Mn, Ni, Zn, Cu, Au, Ag, Hg • not very reactive, hard, tough, shiny

  12. Group 3 • Lanthanides and Actinides • inner-transition elements • Lanthanides (elements 57-71): e.g. La, Ce, Pm • "Rare Earth Metals" • Actinides (elements 89 -103): e.g. Ac, U, Pu

  13. Group 18 • Noble Gases • e.g. He, Ne, Ar, Kr, Xe, Rn • very unreactive, colourless, monatomic gases • outer valence shells are filled, thus very stable

More Related