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Understanding the Periodic Table: Key Differences Between Groups and Periods

This overview delves into the structure of the periodic table, highlighting the differences between groups and periods. While there are seven distinct periods, each corresponding to the number of elements and their electrons, groups are organized by similar chemical properties. The first period contains only two elements, while periods 6 and 7 uniquely host 32 elements when considering their f-block sections. We also touch upon the main group elements and transition metals, explaining their significance within the table.

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Understanding the Periodic Table: Key Differences Between Groups and Periods

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Presentation Transcript

  1. DO NOW! • Remembering back to Chapter 1…. • What is the difference between a group and a period?

  2. The Periodic Table At A Glance

  3. Periods • There are a total of seven periods of elements in modern periodic table. • The length of each period corresponds to the number of elements, which in turn determines the number of electrons that can occupy the sublevels (previously known as rings)

  4. Example: • Period 1 • Two elements • Period 2 • Eight elements • “Ring” a bell???

  5. Periods 6 and 7 • Periods 6 and 7 may look like they only contain 18 elements, but in actuality, they contain 32 elements.

  6. Blocks • There are four areas that are called blocks on the periodic table. • They will be important when we learn about electron configurations

  7. Main Group Elements • The s-block and p-block make up the main group elements • Groups 1-2 (s), 13-18 (p)

  8. Transition and Inner Transition Metals • The transition metals are in groups 3-12 (d-block) • The inner transition metals are below the main periodic table (f-block)

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