molecular charge Flashcards
another word for neutral?
hydrophobic
ionic bonds?
between an atom with low ionization potential and an atom with high electron affinity
covalent bond?
between atoms that have similar tendencies to gain or lose elctrons
polar covalent bond?
caused by atoms with different electronegativities
how does bond polarity arise?
differences in electronegativity between two atoms
evidence for polarity?
measuring dipole moment
the arrow goes from positive to negative
what happens to partial charge when electronegativity is small?
partial charge is also small
what is the charge of each atom in a carbonate?
divide overall charge by number of atoms
how are crystal structures useful?
crystal strucutures are closer to the real thing
molecular modelling?
predicst 3D structure and gives cartesian equation
what to consider in hydrogen bonding?
one atom is always a H-donor
one atom is a H-acceptor
what is a hydrogen bonding?
strong dipole-dipole interaction
what is a H-bond donor described as?
electron deficient hydrogen (delta +)
what is H-bond acceptor described as?
Electron rich heteroatom (delta -)
what does hydrogen bonding involve?
orbitals so has an element of directionality involved
