Electron Cloud Posted on 9th November 201526th July 2021 by ThePD (The Project Definition) Electron Cloud is the way to describe an atomic orbital that is a region of negative charge surrounding the atomic nucleus. Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in Technology and tagged chemistry. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.