{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Chapter 7 - CHAPTER 7 ELECTRONS IN ATOMS AND PERIODIC...

Info icon This preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
CHAPTER 7 ELECTRONS IN ATOMS AND PERIODIC PROPERTIES ATOMIC STRUCTURE AND PERIODICITY KEY QUESTION: WHY ARE CHEMICAL PROPERTIES PERIODIC? Isaac Newton and classical mechanics ... good for baseballs and planets, not so hot for atoms What we already know ... atoms = protons and neutrons in the nucleus; electrons = outside the nucleus The issue now: let's be a bit more precise about what/where the electrons are Why? THAT'S WHERE THE CHEMISTRY IS! Quantum mechanics ... incorporation of wave and particle aspects of matter into a single comprehensive theory The early 20th Century was the Century of the electron. But first, let's talk about waves and ELECTROMAGNETIC RADIATION WAVES OF LIGHT: James Clerk Maxwell ... (1865) ... light is electromagnetic radiation waves ... wavelength and frequency hertz ... amplitude ... nodes ... velocity
Image of page 1

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

View Full Document Right Arrow Icon
IMPORTANT:   c c = 3.00 x 10 8 m / s IMPORTANT: the electromagnetic spectrum, of which visible light is just a small section
Image of page 2
EX. National Public Radio locally is on a radio station operating at 90.9 MHz
Image of page 3

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

View Full Document Right Arrow Icon
Image of page 4
Image of page 5

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

View Full Document Right Arrow Icon
Image of page 6
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