Drill: Determine EC, EDD, & Ox # for each element in CuCl 2.

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

Drill:• Arrange the following atoms

from lowest to highest 1st ionization energies:

• 2, 20, 14, 55, 7

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

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

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