1 / 3

Electrons

Electrons. Ground state electrons lowest possible energy as close to nucleus as possible Excited state electrons have absorbed energy (not lowest) moved farther from the nucleus. Light. Excited electrons emit (lose) a photon of energy to become ground state electrons.

ilyssa
Télécharger la présentation

Electrons

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Electrons • Ground state electrons • lowest possible energy • as close to nucleus as possible • Excited state electrons • have absorbed energy (not lowest) • moved farther from the nucleus

  2. Light • Excited electrons emit (lose) a photon of energy to become ground state electrons. • The emitted energy has a specific wavelength. • If the wavelength falls within the range of 400nm to 700nm (400x10-9m 700x10-9m) our eyes think it is something special.

  3. Calculating energy of a photon Frequency of a wave can be used to calculate energy. E=hν E= energy (Joules, J) h= Plank’s constant (Joule-seconds, Js) 6.62x10-34 v= frequency (cycles per second, 1/s

More Related