:CO draw 2 of the electrons to the left of carbon then 2 to the right and then draw 2 electrons of oxygen to its left and then the other 4 around the other sides of oxygen and draw a circle around the 2 electrons shared with carbon and the 6 existing electrons of oxygen then draw a circle around the 4 electrons carbon has and the 2 it shares with oxygen and after you've done all that, draw a bracket around the molecule and write -2 in superscript signifying that its net charge is -2
The Lewis dot structure for CO2 starts with a C atom in the center. On the left and right sides are doubly bonded O atoms. Each one of these O atoms has a pair of dots on the top and bottom.
The Lewis dot structure looks at the valence electrons of each atom. So, for C, with four valence electrons it would be C with a dot on top, bottom, left and right.
c4h10o
dots
Draw the Lewis Structure
Lewis structure for cobalt chlorit
Cl has 7 electrons. If you draw Cl^-, there are 8 electrons and a minus 1 charge. What do you want to draw? And what do you mean by "odd" electrons?
c4h10o
H-O-Cl
h-s=s-h
dots
I uploaded a jpg of the acetate ion Lewis structure to imageshack. Just click the "related link" below and you should see it. Many people draw Lewis Structures with minor variations, but this should give you the basic idea.
Draw the Lewis Structure
Will this link help you?, it is quite impossible to draw a Lewis dot structure in this simple text editor. See related links.
See this question for how to draw the Lewis Dot structure of any molecule:[http://wiki.answers.com/Q/How_do_you_draw_Lewis_dot_structuresHow do you draw Lewis dot structures?]
I l As -I l I As has 3 valence electrons and I has 1
CaCO3 does not have a lewis structure because this molecule is composed of ions. (Ca+2 and CO3-2). you have to draw the lewis structure of the ions separately, as shown in the parenthesis.
Lewis structure for cobalt chlorit
It is a lewis base because of its lone pair of electrons that can be "donated". If you draw/look at the lewis structure it is much easier to tell. Especially when the formula is not that of an ion!