bonding exam Flashcards
Ionic bonding
M &NM transfer electrons high melting point high boiling good conductors aqeuous or molten bc free ions crystalline solid
molecular
NM&NM share electrons covalent bond low boiling and melting point not good conductors, insoluable solid liquid or gas
metallic bonding
M&M sea of valance electrons ductile malleable good conductors bc free electron
Ag
1+
zn
2+
cd
2+
Anions
NM gain electrons become negative bigger than neutral atom
Cations
M lose electrons become positive smaller then neutral atom
octet rule
8 val e- become stable
formula unit
smallest representative unit subscripts are simplest whole number ratios
Ternary Ionic compounds
3 or more elements with polyatomic
Diatomic
N2 O2 F2 Cl2 Br2 I2 H2
1
mono
2
di
3
tri
4
tetra
5
penta
6
hexa
7
hepta
8
octa
9
nona
10
decaa
ionic character & electronegativity
the greater the electronegativity difference the stronger the ionic bond and character is
single bond
sigma (longest weakest)
double bond
pi (shorter tighter)
triple bond
sigma pi sigma(shortest tightest)
VSEPR theory
valance shell electron pair repulsion (structure determiner)
polar
different atoms one more negative one more positive
nonpolar
same atom equal share
vector arrow
points to more electronegative farthest to right and high up
metal alloy
composition of more than one metal
boron
6 val e-
hydrogen
2 vale-
