How do I draw Lewis Structure Diagrams? +1 More

[Daniel Kh]

Homework Statement

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2 Questions, sorry about this if It adds confusion.
1) How do I go about drawing Lewis Structure Diagrams? I've searched the web, but all I can find, even when they say it's a "Lewis structure" diagram is lewis dot diagrams. My teacher wants it in the specific form where you draw the dipoles, the charges and also a stick as a bond i think?
I have slight confusion with this as I get confused with the steps. I'm good at drawing the dot-diagrams, I know it progresses from there, but I just don't know how to do it.
I'm also puzzled with the types of intermolecular forces and how you classify them. All I know is that it's London Dispersion, Dipole-Dipole, and Hydrogen Bonds.
Please excuse my ignorance, but I was just really confused and couldn't find a clear source.[/B]

2) Is there any way I can determine a molecule's 3D shape from drawing a lewis dot diagram? Or must I draw it through structure diagrams, then figure it out from there?

 

[Asim Riaz]

Homework EquationsN/AThe Attempt at a Solution 1) A Lewis structure diagram is a way to represent the bonding of a molecule. It consists of a drawing of the atoms that make up the molecule, with bonds represented by lines between them. The charges on the atoms are also usually indicated in the diagram. This can give a good indication of how the molecule is held together and what type of intermolecular forces may be present.To draw a Lewis structure diagram, first figure out the number of valence electrons for each atom in the molecule. Then draw a sketch of the molecule, with the atoms arranged in the correct order and orientation. Connect the atoms with lines representing the bonds. Add any additional electrons to complete the octets for each atom. Finally, add any charges to indicate the polarity of the molecule.2) Generally, it is not possible to determine the 3D shape of a molecule just from a Lewis dot diagram. To determine the 3D shape of a molecule, a more detailed structure diagram must be drawn. This diagram will include the bond angles and lengths, as well as the bond dipoles. From this, the 3D shape of the molecule can be determined.