drill: determine ec, edd, & ox # for each element in cucl 2
DESCRIPTION
Drill: Determine EC, EDD, & Ox # for each element in CuCl 2. Chemical Periodicity. Atomic Size. Size increases as you go down in any column Size decreases from left to right in any row. Ionic Size. Size increases as total charge decreases C +2 > C +4 F -1 > F. - PowerPoint PPT PresentationTRANSCRIPT
Drill: Determine EC, EDD, & Ox # for each element in
CuCl2
Chemical Periodicity
Atomic Size•Size increases as you go down in any column
•Size decreases from left to right in any row
Ionic Size•Size increases as total charge decreases
•C+2 > C+4
•F-1 > F
Rank the elements from their atomic number
from smallest to largest
9, 55, 13, 11, & 1
Ionization Energy•The energy required to remove electrons from atoms or ions
1st Ionization Energy• Decreases as you go
down any column
• Increases from left to right on any row
• Fr <<<<<<<<<<<<<He
Shielding Effect• The further away an
electron is from the nucleus, the more electron clouds lie between the electron & the nucleus
Review HW•Problems:
•40 – 42 & 57 – 64
•on pages 170 & 171
Ionization Energies
•2nd > 1st
•3rd > 2nd
•Massive increase when a shell is emptied
Electron Affinity•The attraction of electrons by an atom
Electron Affinity• Decreases as you go
down any column
• Increases from left to right across any row
• Fr <<<<<<<<<<<< F
Drill:• Arrange the following atoms
from lowest to highest 1st ionization energies:
• 2, 20, 14, 55, 7
Electronegativity
•The attraction of shared pairs of
electrons by an atom
Electronegativity• Decreases as you go
down any column
• Increases from left to right across any row
• Fr <<<<<<<<<<<< F
Drill:Describe the trends
of the first four ionization energies
of aluminum
Metallic Character
•Increases as you go down any column
•Decreases from left to right across any row
Reactivity•Metals 1A > 2A > 3A
•Metals increase down
•Nonmetals increase as you get closer to F
Metal Oxides•When dissolved in water, make basic solutions
•Sometimes called basic anhydrides
•MgO, Na2O, etc
Non-metal Oxides•When dissolved in water, make acidic solutions
•Sometimes called acid anhydrides
•CO2, SO2, SO3, NO2
Metal Hydrides•Metals bonded to H
•When dissolved in water, make basic solutions
•NaH, MgH2, AlH3, etc
Non-metal Hydrides•Non-metals bonded to H
•When dissolved in water, make acidic solutions
•HCl, H2S, HBr, etc
•Exception: NH3
Place the following elements in largest to smallest order
with respect to: 1) diameter 2) 1st ionization energy
3) electronegativity 4) metalic character
• Elements #: 1,5, 8, 15, 56
Identify as ionic, covalent, or metallic bonds
Na-Cl Fe-CrS-Cl H-Cl
Mg-S C-CN-O Fe-Fe
Active Metal Rxns
M + H2O
MOH + H2
Predict Products:
Solid potassium is added to water:
2 K + 2 HOH
2 KOH + 1 H2
Predict Products:
Solid calcium is added to water:
Ca + 2 HOH
Ca(OH)2 + H2
Active Metal Rxns
MxOy + H2O
Mx(OH)z
Predict Products:
Solid potassium oxide is added to
water:
K2O + HOH
2 KOH
Predict Products:Solid barium
oxide is added
to water:
BaO + HOH
Ba(OH)2
Active Metal Rxns
MxOy + H2O
Mx(OH)z
Predict Products:Solid aluminum
oxide is added
to water:
Al2O3 + 3 HOH
2 Al(OH)3
Active Non-metal Rxns
X2 + H2O
HX + HXOn
Predict Products:Chlorine gas
is bubbled
through water:
Cl2 + H2O
HCl + HClO
Active Non-metal Rxns
XmOn+ H2O
HXOz
Predict Products:Sulfur dioxide gas is bubbled through
water:
SO2 + H2O
H2SO3
Predict Products:Dichlorine oxide
gas is bubbled through water:
1 Cl2O + H2O
2 HClO
An 30.0 g unknown sample (containing only C, H, & O) was burned in excess
oxygen yielding 66 g CO2 & 36 g H2O. Calculate its
empirical formula :
An 240 g unknown sample (containing only C, H, S, &
O) was burned in excess oxygen yielding 352 g CO2, 144 g H2O, & 128 g, SO2.
Calculate its empirical formula :
Drill: Burning octane (C8H18) occurs at a
99 % yield. Calculate the volume of oxygen
gas required to burn 228 mg octane.
Test Review
Write the EC, EDD, QN, & Ox States for
elements:
20, 27, 51, 42, 60, & 2
Predict size order for elements:
45, 15, 57, 9, 88, 1
Predict 1st ionization energy
order for elements:
22, 55, 14, 87, 8, 10
Predict electronegativity
order for elements:
13, 38, 8, 56, 9, 10
Predict the type of bond for:
Fe-Fe Ca-FP-O Si-OCs-I Ti-Fe