What does the acronym VSEPR stand for?
Valence Shell Electron Pair Repulsion
What are the 2 main characteristics of VSEPR theory?
Bonded and non-bonded domains around a central atom.
Name the three types of Intramolecular Bonds we have studied.
Ionic, Covalent, Metallic
What are intermolecular forces?
CO2 is linear. SO2 is NOT linear. Why?
CO2 has no non-bonded domains while SO2 has one non-bonded domain.
molecular shapes
What is the electron sea?
The delocalized electrons in a metallic bond.
What 4 atoms take place in Hydrogen Bonds?
Hydrogen, Nitrogen, Oxygen, Flourine
Forces that cause atoms to join with other atoms.
Look at the Lewis structure of NH3. What is the EDG and the MG?
EDG = tetrahedral, MG = trigonal pyramidal
What is a non-bonded domain?
A pair of electrons around the central atom that are not connected to another atom.
What is a dipole?
What is the same about Covalent and Metallic bonds?
They share electrons.
What are the weakest of all bonding forces?
Londoner Disperson forces: i.e. temporary dipole attractions
CH4 has 4 bonded domains on the central atom. Name the EDG and MG.
tetrahedral, tetrahedral
What determines the shape of a molecule?
The combination of bonded and non-bonded electron pairs around the central atom.
What is an electrostatic attraction?
What makes metallic bonds unique?
The electrons are delocalized and move freely through overlapping orbitals forming the electron sea.
What are Van der Waals forces?
Weaker electrostatic attractions that join molecules together.
Consider the Lewis structure of SbF5. Name the Bond Type Pattern, EDG, and MG.
AB5, trigonal bipyramidal, trigonal bipyramidal
How does a non-bonded electron pair affect the molecule?
It exerts more force against the neighboring bonds and "bends" the angle.
What are the circumstances of a dipole?
They can be be permanent (based on the structure of the molecule) or temporary (formed when coming into contact with other poles).
What does AB3E mean?
3 bonded domains and one non-bonded domain around a central atom.
Name the 3 types of electrostatic attractions of Van der Waals.
1) two permanent dipoles 2) one permanent and one temporary dipole 3) two temporary dipoles
Consider H3O+. What does the plus mean? Name the Bond Type, EDG, MG.