Name____Key______Date______
Chemistry
Chapter 5 Study Guide
The Scientists:
Be able to match the scientist’s name with his main contribution to the periodic table.
Use your book or your notes to write each scientist’s main contribution to the periodic table.
Cannizzaro- method to determine mass of elements
Mendeleev- organized elements by mass and properties, left spaces for predicted elements
Moseley- determined a method to find the atomic number of an element
Ramsay- discovered noble gases
Navigating the Periodic Table:
Be able to label a blank periodic table using the following terms.
See the table at the back of the text or the one we colored in class
Alkali metals
Alkaline Earth metals
Transion metals
Lanthanide series
Actinide series
Chalcogens
Halogens
Noble Gases
Metals
Nonmetals
Metalloids
Periods
Groups
Families
s-block
p-block
d-block
f-block
representative or main group elements
Electron Configurations and the Periodic Table:
Be able to write abbreviated electron configuarions by using the periodic table.
Be able to identify elements if you are given the abbreviated configuration.
Write abbreviated configurations for the following:
Li- [He] 2s1
Cu [Ar] 4s23d9
Sn [Kr] 5s24d105p2
O [He] 2s22p4
Br [Ar] 4s23d104p5
Based on the configurations below, identify the period, group # and the element.
Electron configuration / Period / Group # / Element Symbol[Ne] 3s23p4 / 3 / 16 / S
[Kr] 5s24d105p2 / 5 / 14 / Sn
[Xe] 6s24f145d106p5 / 6 / 17 / At
[He] 2s2 / 2 / 2 / Be
[Ne] 3s1 / 3 / 1 / Na
[Ar] 4s23d104p6 / 4 / 18 / Kr
[Rn]7s1 / 7 / 1 / Fr
[Ar] 4s23d2 / 4 / 4 / Ti
[Ne] 3s23p1 / 3 / 13 / Al
Periodic Properties:
Be able to define and explain the trend for atomic radii, ionic radii, ionization energy, electron affinity and electronegativity.
Define each of the terms:
Atomic radius
Ionic radius
Ionization energy
Electron affinity
Electronegativity
Using the trends and the periodic table to complete each.
1. Place the following elements in order from smallest to largest atomic radius
F Cl Ge C Ni Be Ca Na
F < C < Be < Cl < Na< Ge < Ni < Ca
2. Describe the size of the ionic and parent radius for each of the following:
Parent Cation /Anion Ionic radius is smaller or larger than parent?
Na Na+1 smaller
Ca Ca+2 smaller
S S-2 larger
Cl Cl-1 larger
3. Place the elements in order of increasing ionization energy
Li O C K Ne F
K < Li < C < O < F < Ne
4. Place the elements in order of increasing electron affinity
C O Li Na Rb F
Rb < Na < Li < C < O < F
5. Which element is the most electronegative?
C, N, O, Br, S
6. For each of the following elements, write the abbreviated configuration, determine the charge of the ion it is most likely to form and identify the noble gas whose configuration is achieved. The first one is done for you.
Element Configuration Most likely charge Name of noble gas
Li [He] 2s1 +1 helium
Rb [Kr] 5s1 +1 krypton
Mg [Ne] 3s2 +2 neon
Br [Ar] 4s2 3d10 4p5 -1 krypton
P [Ne] 3s2 3p3 -3 argon
S [Ne] 3s23p4 -2 argon