1 / 1

Identify central atom and ligands

C, N, O, and F always obey octet rule . H, Be do not follow octet rule Example: BeCl 2 , H 2 . If only 3 electron groups around central atoms, then central atom forms incomplete octet Example: BH 3. Group III (13) elements such as B, Al . Identify central atom and ligands.

noura
Download Presentation

Identify central atom and ligands

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. C, N, O, and F always obey octet rule H, Be do not follow octet rule Example: BeCl2, H2 If only 3 electron groups around central atoms, then central atom forms incomplete octet Example: BH3 Group III (13) elements such as B, Al Identify central atom and ligands If there are 4 electron groups around the central atoms, then the central atoms follows octet rule and appropriate formal charges: Example: BH4- The central atom should have a complete octet or expanded octet, therefore form as many multiple bonds as needed to achieve complete octets and multiple bonds as needed to reduce formal charges. Examples: TeO2, PO43- , XeO2F2 Third row elements (S, P, Cl etc) and greater atomic numbers

More Related