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Presentation transcript:

Turn in Goal Sheets Periodic Table Organization due today

Atomic Radius (Turn and Talk) What is a radius and how do you find it? Distance from the middle of a circle to the edge How would you measure the radius of an atom? (draw) What occurs to the radius of an atom as you move from top to bottom in the table? Increases ( ) (think of your Bohr diagrams) What occurs as you move left to right? Decreases ( )

Atomic Radius Why would the atomic radius decrease as you move from left to right? P you e - Opposites Attract

Atomic Radius Why would the atomic radius decrease as you move from left to right? P you e - Opposites Attract

Atomic Radii Atomic Radii Increases Atomic Radii Decreases High Atomic Radii Low Radii

Ionization Ionization: removing an e - from an atom Na 0 + IE Na 1+ + e - 11e- 11p+ 10e- 11p+ + e - + IE Forming a Na ion from a neutral Na atom req. E. The e - on the R can transfer to anthr particle

Ionization Ionization energy “e - greed”. How badly does the atom what to hold on to its electron? Lower I.E. = less energy to remove an electron from the atom & create an ion. Higher I.E. = takes more energy to remove and electron from the atom & create an ion.

Trends in Ionization Energy Ionization Energy Decreases Ionization Energy Increases Lowest I.E. Highest I.E.

Trends in Electronegativity Electronegativity Decreases Electronegativity Increases Lowest EN. Highest EN.

Periodic Trends Electronegativity Decreases Electronegativity Increases Ionization Energy Increases Atomic Radii Decreases Ionization Energy Decreases Atomic Radii Increases

Review Videos Bohr: u.be u.be Ionization: utu.be utu.be Electronegativity: tu.be tu.be Periodic trends rap: Periodic Trends: