chapter 6 exam Flashcards
how are covalent bonds formed
through the sharing of two or more non-metals
how are ionic bonds formed
transfer of alectrons between metals and non metals
energy required to break a bond between two atoms
bond energy
what factor makes bond length longer in single bonds
radius of the atom
the tendancy of an atom to attract bonding electrons to itself when it bonds with another atom
electronegativity
the larger the electronegativity difference…
the more polar the bond
npc electronegativity
;ess than .5
pc electonegativity
betwwwn .5 and 1/7
ionic negativity
greater than 1.7
the closer they are
the weaker there bond energy
longest bond length
single bond
how many bonds do BCNO form
3432 (+4 dots)
outermost electrons nvolved in bonding
valence
the chemical symbol represnts the nucleus and core electrons
lewis structure
molecular formula
just the compound
skeletal structure
drawing without dots or lines
structural formula
full drawing with dots and lines
atoms only bonded to one other atom
terminal atom
rules for hydrogen drawings
H and halogens form one bond always
how to place electrons
place one on each side of the central before pairing
the higher the boiling point (Tb)
the stronger the IMF
interionic interactions
stronger forces that hold ionic compounds together
what IMF do NPC have
LDF’s only
if the molecule has h bonding
it also has dipole to dipole and LDF
