Theory Flashcards
What is valence bond theory
A theory stating that atomic orbitals overlap to form a new orbital with a pair of opposite spin electrons
ex. when two hydrogens atoms make a covalent bond, their 1st orbitals overlap to form single lapped orbitals.
What is Paulis exclusion principale
No 2 electrons can have the same quantum numbers, spin has to be opposite
orbital hybridization
atoms can share electrons it doesn’t have
What is Hunds rule
Every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied
What is Aufbau principale
When electrons are added to atoms they fill the lowest available energy levels before filling higher levels
How do i know if a molecule is London dispersion
if its non polar compound
How do i know if a molecule is london disperion and dipole dipole
it would be polar compound
Compound with what would mean its hydrogen bond, londong disperion and dipole dipole
H-F, HO, Hn
Compound is non polar if….
central atom has no lone pair
all atoms around he central atom are the same
How to tell is a compound is polar
if central atom has lone pair
Trick- any molecule containing C and H only means it’s
non polar
What is trigonal pyramidal axe
Ax3E
what is trigonal plane AXE
Ax3
List trional planar in order
trigonal planr
bent
list tetrahedral in order
tetrahedral
trigonal pyrmid
bent
