Drill: Determine wavelength of a

221 g ball traveling at60.0 m/s.

Review & Collect Drill

& HW

CHM II HW•Review PPs 13 & 14

•Complete the attached assignment & turn it in tomorrow

Are there any questions on

previous material?

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

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

Review & Collect Drill

& HW

CHM II HW•Review PPs 13 & 14

•Complete the attached assignment & turn it in tomorrow

Are there any questions on

previous material?

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

Drill: Place the following in largest to smallest order with

respect to: 1) diameter 2) 1st ionization energy

3) electronegativity 4) metallic character

•Elements #: 1, 4, 8, 15, 55

Review & Collect Drill

& HW

Test Tomorrow

Test Review

Choose the higher of each pair in: ________

Na-Cl Fe-CrS-Cl H-ClMg-S Si-Cl

N-O Fe-Ru

Draw the electron configuration for:

Cl-17 Fe-26 Ra-88

(Cr-24)+3 (Te-52)-2

Draw the electron dot diagram for:

Cl-17 Fe-26 Ra-88

Cr-24 Te-52 As-33

Calculate the energy of IR radiation with a

wavelength of 996 nm.

c = 3.00 x 108 m/s h = 6.63 x 10-34 Js

Calculate the mass of IR radiation with a wavelength of 996

nm. c = 3.00 x 108 m/s h = 6.63 x 10-34 Js

Calculate the volume of gas released at

227oC under 83.1 kPa when 770 g of octane

(C8H18) is burned.