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?
dots
: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
bond length between 2 atoms
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Draw C triple bond O, and placec a lone pair of electrons on the C and another on the O.
To draw the Lewis structure of OPBr3:P is center atom. Double bond oxygen to P and put 4 electrons on its outer shell. Then have a regular bond connecting the three Br to the P and give them 6 electrons on the outside.
dots
: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
Place C in the center and attach 2 Cl atoms to it, and attach 2 H atoms to it. Then place 3 lone pairs of electrons around each Cl atom. That is the Lewis structure.
I l As -I l I As has 3 valence electrons and I has 1
The answer is 12. If you draw the lewis dot structure for formaldehyde, you have to remember to draw the non-bonding pairs on the oxygen atom, and when you count all the electrons, remember that the lines used to represent bonds are counted as 2.
First draw an N for the nitrogen atom. Off of that, there are three dashes, each connected to one F, for each fluorine atom. Finally, on all non connected sides of each atom, there are two dots representing unshared valence electrons.
With the exception of helium, the group 18 atoms will have as their Lewis structure the elemental symbol surrounded by 4 pairs of electrons, each electron represented by a dot. These are the noble gases, and they are, for the most part, chemically inert, which means they do not typically react with any other elements. Helium will only have one pair of electrons shown.
bond length between 2 atoms
To draw a Lewis structure it is not necessary to know the atomic number of the element. You must simply know the chemical symbol for the element and how many valence electrons the element has.
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!
The Lewis structure of CH3 starts with a C in the center, representing the Carbon atom. The carbon atom has three dashes and two dots. Connected to each dash is an H, representing the hydrogen atoms.