A lithium atom has 3 protons,3 neutrons, and 3 electrons so just get like 9 marshmallows or ping pong balls you get the idea. get the protons and neutrons and put them together so that's the nucleus and just put the electrons 'spinning' or 'orbiting' around the nucleus
oxygen with 8 electrons in middle, Lithium on each side, don't forget the charges!
first,LEARN HOW TO DO A LITHIUM ATOM
Bohr Ruthford Diagram helps
H-O-Cl
h-s=s-h
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.
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!
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!