PGCC CHM 101 Sinex

Periodic Table of the Elements

The Chemist’s Organizational Chart

Los Alamos National Laboratory's Chemistry DivisionPeriodic Table of the Elements

metals non-metals

transition metals

+1+2 +3 -3 -2 -1

noblegases

http://pearl1.lanl.gov/periodic/default.htm

atomic numberatomic mass

typical charge on ion in binary compound

Modified from http://www.cem.msu.edu/~djm/cem384/ptable.html

gases liquids

105Db

solids

107Bh

Physical States at Room Conditions

man-made elements

not found on Earth

natural elements

105Db

107Bh

Natural vs. Man-Made Elements

large quantities

ultratrace amounts

All other elements have no known biological function.

Geoff Rayner-Canham, Descriptive Inorganic Chemistry, 2nd ed., Freeman (2000)

105Db

107Bh

Biologically Important Elements

Elements considered particularly toxic

105Db

107Bh

toxic

Geoff Rayner-Canham, Descriptive Inorganic Chemistry, 2nd ed., Freeman (2000)

diatomic tetratomic octatomic

All other free elements are atomic in nature.

105Db

107Bh

Molecular Nature of Free Elements

no stable forms

105Db

107Bh

All Isotopes Radioactive

s block p block

d block

f block

105Db

107Bh

Electronic Structure

s block p block

105Db

107Bh

Valence Electronsfor group A elements

ns1

ns2

ns 2np 1ns 2np 2

ns 2np 3

ns 2np 4ns 2np 5

ns 2np 6

3A 4A 5A 6A 7A1A

2A

8A

Group B

+1+2

+3 -3 -2 -10

± 4Charge on stable

monatomic ion

Period number gives shell (n)

105Db

107Bh

Hydride Chemistry (binary hydrogen

compounds)

3A 4A 5A 6A 7A1A

2A

8A

Group B

ionic

metallic

covalentsalts with H-

solidsmostly gases, some liquids

polymeric

interstitial H2

molecules with +1chains with H-to-H bonds

For the best interactive and informative periodic table

see WebElements.

Click on the element symbol and then use the menu to the left to select

information.