May 10-- Electron Dot and Lewis Diagram

Electron Dot diagram is the other name of Lewis Diagram

 - the electrons are represented by dots

Around the nucleus, there are 4 orbitals and each orbital can hold a maximum 2e.We are using dots to represent electrons. The dots are placed on the 4 sides in pairs.

Here is an example.

exercise 1

Draw the electron dot diagram ---HCl

First of all, list up all the valence electrons

Hydrogen 1e

Chlorine   7e

For this question, there is no central atom.The one furthest from a full shell is the central atom.

* we also can use "-" instead or " ."