1 / 5

Cations Ca t ion - positively charged ion (less electrons than protons)

Cations Ca t ion - positively charged ion (less electrons than protons) Ex: Lithium has 3 e - and is very reactive (1 e in valence) Removing one e - makes lithium less reactive It now has a full valence shell Lithium ion written as Li +

donal
Télécharger la présentation

Cations Ca t ion - positively charged ion (less electrons than protons)

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. Cations Cation - positively charged ion (less electrons than protons) Ex: Lithium has 3 e- and is very reactive (1 e in valence) Removing one e- makes lithium less reactive It now has a full valence shell Lithium ion written as Li+ It is not helium because we determine element by amount of protons (Helium has 2 e- like the Li + ion) It is not lithium…..it is a lithium ion!

  2. Naming a Cation: uses the name of the parent atom Ex: Na+ is called Sodium ion Mg2+ is called a magnesium ion (charge of +2)

  3. Anion – negatively charged ion (more electrons than protons) Ex: Fluorine has 9 e- and is reactive (7 e- in valence shell) Adding one e- makes fluorine less reactive because it now has a full valence shell Fluorine ion written as F - It is not neon (Ne has 8 e- like the F-ion) It is not fluorine ….it is a fluorine ion!

  4. Naming a Anion: use the root name of the atom and change the ending to have the suffix “ -ide” Ex: F - is called Fluoride ion I - is called an Iodide ion O 2- is called an oxide ion (charge of -2)

More Related