Periodic table

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Periodic table

  1. 1. Periodic Table<br />
  2. 2. Elements are arrange into rows by increasing ATOMIC NUMBER<br />The horizontal rows are called PERIODS and are labeled from 1 to 7.<br />
  3. 3. The vertical columns are called GROUPS are labeled from 1 to 8 (or I to VIII)<br />Elements in the same group tend to have similar properties and act in similar ways in reactions<br />
  4. 4. Alkali metals<br />Group 1<br />Have 1 electron in the outer shell<br />Very reactive metals<br />In nature, are always found in compounds – like salt.<br />Very soft<br />Shiny, silver<br />
  5. 5. ALKALINE EARTH METALS<br />Group 2<br />2 electrons in the outer shell<br />Metals<br />White, silvery, and malleable<br />
  6. 6. Transition metals<br />We are not going to learn about these elements in this course<br />
  7. 7. Halogens<br />Group 7<br />7 electrons in the outer shell<br />Non-metals<br />Very reactive - are often bonded with Group 1 Alkali Metals<br />
  8. 8. Noble Gases<br />Group 8<br /><ul><li>Full outer shell =8 electrons
  9. 9. Non-metals
  10. 10. Exist as gases
  11. 11. Not reactive with other elements</li></li></ul><li>Non-metals<br />Metals<br />Green squares are metalloids<br />

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