1 / 6

Valence Electrons

Valence Electrons. Unit 5 – Bonding Mrs. Callender. What are Valence Electrons and What are Their Uses?. Lesson Essential Question:. Valence Electrons. They are electrons in the outermost shell. They are used in bonding. Nitrogen Group or Group 15 has 5 valence e - s . (s 2 p 3 ).

midori
Download Presentation

Valence 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. Valence Electrons Unit 5 – Bonding Mrs. Callender

  2. What are Valence Electrons and What are Their Uses? Lesson Essential Question:

  3. Valence Electrons They are electrons in the outermost shell. They are used in bonding.

  4. Nitrogen Group or Group 15 has 5 valence e-s. (s2p3) ChalcogenGroup or Group 16 has 6 valence e-s. (s2p4) Noble Gases or Group 18 has 8 valence e-s. (s2p6) Exception: Helium which has two valence e-s since it is a s2. Carbon Group or Group 14 has 4 valence e-s. (s2p2) Alkali Metals have one valence e-. (s1) Alkaline Earth Metals have two valence e-s. (s2) Boron Group or Group 13 has 3 valence e-s. (s2p1) Halogen Group or Group 17 has 7 valence e-s. (s2p5) Transition Metals or “d block” elements have 1 or 2 valence e-s. Lanthanide and Actinide Series Elements or “f block” elements have 1 or 2 valence e-s.

  5. Dot Designations Valence Electrons can be represented by Lewis Dot Structures. 2 valence e- 1 valence e- 3 valence e- 4 valence e- X X X X 5 valence e- 6 valence e- 7 valence e- 8 valence e- X X X X

  6. Dot Designations For Period 3 Write the Lewis Dot Structures for the elements in Period 3. 2 valence e- 1 valence e- 3 valence e- 4 valence e- Na Al Mg Si 5 valence e- 6 valence e- 7 valence e- 8 valence e- P S Ar Cl

More Related