The_Periodjnnic_Table.pptxsbebehehrrhrhhr

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1. The Periodic Table

2. Introduction The periodic table organizes elements based on atomic number.

3. History Dmitri Mendeleev created the first periodic table in 1869.

4. Periodic Table Structure Elements are arranged in rows (periods) and columns (groups).

5. Metals, Nonmetals, and Metalloids Elements are classified based on their properties.

6. Groups and Periods Groups (columns) share similar chemical properties.

7. Trends: Atomic Size Atomic size decreases across a period and increases down a group.

8. Trends: Electronegativity Electronegativity increases across a period and decreases down a group.

9. Trends: Ionization Energy Ionization energy follows a pattern similar to electronegativity.

10. Applications of Periodic Trends Understanding trends helps predict chemical behavior.

11. Conclusion The periodic table is a fundamental tool in chemistry.