Write the formulas for the compounds.
Geometry
Name the following compounds
Draw the Lewis Structures of the molecules, shape & polarity.
Polarity
100
carbon monoxide
CO
100
What is HCN electron & molecular geometry
linear
100
Na2O
P2O
FeO
CaC2O4
XeF5
Na2O -- Sodium Oxide
P2O -- diphosphorus monoxide
FeO -- iron(II) oxide
CaC2O4 -- calcium oxalate
XeF5 -- xenon pentafluoride
100
BH3
trigonal planar, nonpolar
100
Which substance would you expect to have the highest boiling temperature? Why?
a) CCl4
b) CHCl3
b) CHCl3
Trichloromethane is polar. The molecules attract each other so more energy (higher temperatures) is needed to boil the liquid.
200
lead(IV) hydroxide
Pb(OH)4
200
Which molecule would have the shape shown below?
a) H2O b) CO2 C) NH3 D) CBr4
Answer: NH3
200
H2S
polar
200
SO2
angular, nonpolar
200
Which of the molecules are polar?
CBr4
H2O -- 
NH3 -- 
300
sodium oxalate
Na2C2O4
300
What shape is the following structure?
tetrahedral or trigonal pyramidal.
trigonal pyramidal
300
Cl2Br-
nonpolar
300
CF4
tetrahedral,nonpolar
300
CH3Cl
Polar
400
Sulfur Hexafluoride
SF6
400
Sort Molecules by Shape
PCl3, NH3, BI3, SO3, O2, SiS2, CO2, BeH2
NH3, PCl3, SO3, HCO2-, BI3, SF2, CF4, SiH4
CF4
SiH4
Linear -- BeH2, O2, SiS2,CO2
Trigonal pyramidal -- PCl3, NH3
Trigonal planar -- BI3, SO3, HCO2-
Angular (bent) -- SF2
Tetrahedral -- CF4, SiH4
400
CH3CH2OH
nonpolar
400
CH2O
trigonal planar, polar
400
What are metaliods?
Si
B
Ge
Po
500
Potassium Permanganate
KMnO4
500
Which molecule would have the shape shown below?
a) H2O b) CO2 C) NH3 D) CBr4
CO2 -- Carbon Dioxide
500
CH3OCH3
polar
500
CH3Cl
tetrahedral, polar
500
What are metals?
Zn, Hg, Ag. Fe, Al, Pb, Po, Ni, Li, Bi, Ba, Rb, Be