Lecture 17 (10am) Chapter 8 October 30, 2009

Lecture 17 (10am) Chapter 8 October 30, 2009 - Remember to...

Info icon This preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Remember to turn your clocks back 1 hour this Saturday night! (Daylight Savings Time ends at 2am Sunday morning)
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Chapter 8 continued Lecture 17 October 30, 2009
Image of page 2
Periodic Trends: Atomic Size
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Main Group Elements: Two opposing influences for Atomic Radius 1.Change in n 2.Change in Z eff
Image of page 4
Atomic Size (Atomic Radius) Main Group Elements 1.Down a group, n dominates move down, each atom in the group has one more level of inner electrons to shield the outer electrons 2.Across a period, Z eff dominates electrons added to same outer level (same n value) so inner electron shielding does not change. Outer electrons shield each other poorly, Z eff on outer electrons rises significantly. Transition Elements trends for main group elements do not hold left to right – size relatively constant
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 6
Which element will have the largest atomic radius? (A) F (B) S (C) Cu (D) Li (E) K
Image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Periodic Trends: Ionization Energy Ionization Energy (IE) is the energy (in kJ) that is required to completely remove one mole of electrons from one mole of gaseous atoms or ions.
Image of page 8
Image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Trends in Ionization Energy 1.Down a group: n value increases (atomic size increases), distance
Image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern