Structural Formulas AGENDA: • Review • Check homework • Notes on Structural Formulas • Homework: Drawing Formluas
Dec 23, 2015
Structural Formulas
AGENDA:• Review• Check homework• Notes on Structural Formulas• Homework: Drawing Formluas
Repetition • Ionic• Electrons are…• Types of elements…• Naming• Covalent• Electrons are…• Type of elements• Naming
Iron (II) oxide
FeO
Carbon monoxide
CO
Sodium nitrate
NaNO3
Carbon dioxide
CO2
Na+
Sodium ion
Carbon tetrachloride
CCl4
Mg3(PO4)2
Magnesium phosphate
SiF4
Silicon tetrafluoride
Magnesium chlorate
Mg(ClO3)2
SO2
Sulfur dioxide
Cl-
Chloride
SO3
Sulfur trioxide
ClO3-
chlorate
Boron trichloride
BCl3
Sodium chloride
NaCl
Germanium tetrafluoride
GeF4
CaCO3
Calcium carbonate
Aluminum sulfide
Al2S3
NI3
Nitrogen triiodide
(NH4)2CrO4
Ammonium chromate
Iron (II) ion
Fe+2
carbonate
CO3-2
H2O
Dihydrogen monoxidewater
CoBr2
Cobalt (II) bromide
Na2CO3
Sodium carbonate
Oxide
O-2
H2S
Dihydrogen monosulfide
Li3PO3
Lithium phosphite
Barium hydroxide
Ba(OH)2
Na2SiO2
Sodium silicate
Homework Check
Mixed naming1. Sodium bromide2. Dinitrogen
tetrafluoride3. Lithium hydroxide4. Mercury (I) hydroxide5. Sulfur difluoride6. Iron (II) chloride7. Barium acetate8. Selenium trioxide9. Ammonium nitrate10.Copper (I) oxide11.Aluminum sulfate
12.Ammonium chloride13.Nitrogen trifluoride14.Barium phosphate15.Sodium sulfate16.Lead (II) hydroxide17.Nitrogen monoxide18.Sodium bicarbonate19.Sulfur trioxide20.Cadmium nitrite21.Selenium dioxide
22.CBr4
23.LiNO2
24.NH4HSO4
25.ClF3
26.Hg2SO4
27.Fe2O3
28.Mg3(PO3)2
29.Ni(HCO3)2
30.H2O
31.(NH4)2CO3
32.MgBr2
33.GaPO4
34.KC2H3O2
35.Cu(NO2)2
36.Ca(ClO3)2
37.SnO2
38.NaClO4
39.K2CO3
40.Fe(OH)2
41.Pb(ClO)4
42.SiO2
Binary Molecular1. Carbon monoxide2. Carbon dioxide3. Iodine heptafluoride4. Dinitrogen tetroxide5. Boron trifluoride6. Dinitrogen pentoxide7. Nitrogen monoxide8. Tetraphosphorus decoxide9. Tetraphosphorus trisulfide10.Phosphorus trichloride11.Phosphorus pentachloride12.Disulfur decafluoride13.Disulfur heptoxide
14.P2O3
15.CCl416.P4O6
17.N2F4
18.S2Cl10
19.PCl520.NO2
21.N2O3
22.SF6
23.CBr4
24.H2S25.SBr6
Naming Molecular Compounds1. Carbon dioxide2. Carbon monoxide3. Sulfur dioxide4. Sulfur trioxide5. Dinitrogen monoxide6. Nitrogen monoxide7. Dinitrogen trioxide8. Nitrogen dioxide9. Dinitrogen tetroxide10.Dinitrogen pentoxide
11.Phosphorus trichloride12.Phosphorus pentachloride13.Nitrogen trihydride14.Sulfur hexachloride15.Diphosphorus pentoxide16.Carbon tetrachloride17.Silicon dioxide18.Carbon disulfide19.Oxygen difluoride20.Phosphorus tribromide
Structural Formulas
Date:
Geometry of Molecular Bonds
• Valence Shell Electron Pair Repulsion model (VSEPR) –Electrons repel
• Draw the bonds as far way from each other as possible.
• Set structures appear
Build a model
• 1 black ball• 4 white balls• 4 short sticks
tetrahedral
Build a model
• Remove the “top” stick and ball
Trigonal pyramidal
Build a model
• Remove another stick and ball
Bent
Build a model
• 1 black ball• 2 white balls• 2 short sticks• 2 long sticks• 1 red ball
Trigonal planar
120o
Build a model
• 2 red balls• 2 long sticks
linear
Family Oxidation # # bonds
Alkali +1 1
Alkaline earth +2 2
Boron family +3 3
Carbon family +4 4
Nitrogen family -3 3 (or 4)
Chalogens -2 2
Halogens -1 1
Noble Gases 0 0
Draw F2, Cl2, Br2, I2, H2, O2, N2
Diatomics
• 2 atoms bonded to each other• There are 7 diatomics, which make a
shape of a 7 on column 7.
Bonds• Single bond
– Like putting desks together
• Double bond– Putting desks together AND– Fist pounds on either side
• Triple bond– Putting desks together AND– Fist pounds on either side
AND– Putting heads and knees
together
• Single bonds – long and weak
• Double bonds– Stronger than single– Shorter than single
• Triple bonds– Strongest bond– Shortest bond
Draw NH3, CH4, CH3OH
SCl2, CF4, COCl2, NF3
GeCl4, AsCl3, CO, CO2
SeCl2, NCl3,H2Se
AsF3, SF2, PBr3