Encyclopedia of Earth
Encyclopedia of Earth: Hydrogen
Information about the first element on the periodic table, Hydrogen, atomic number 1. Covers its history, sources, physical and atomic properties, places it occurs naturally on the Earth and in space, its many uses, and forms in which it...
Encyclopedia of Earth
Encyclopedia of Earth: Helium
Information about the element, Helium, atomic number 2. Covers its discovery, physical and atomic properties, how abundant it is on the Earth, its uses, possible substitutes, and permissible exposure limits.
Encyclopedia of Earth
Encyclopedia of Earth: Gold
Information about the element, Gold, atomic number 79. Covers its unique physical properties, its atomic properties, how abundant it is on the Earth, sources, uses, and potential substitutes.
Encyclopedia of Earth
Encyclopedia of Earth: Fluorine
Information about the element, Fluorine, atomic number 9. Covers physical and atomic properties, how abundant it is on the Earth, and permissible exposure limits. Also discusses uses, isotopes, and health concerns.
Encyclopedia of Earth
Encyclopedia of Earth: Europium
Information about the element, Europium, atomic number 63. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations.
Encyclopedia of Earth
Encyclopedia of Earth: Erbium
Information about the element, Erbium, atomic number 68. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations.
Encyclopedia of Earth
Encyclopedia of Earth: Curium
Information about the element, Curium, atomic number 96. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations.
Encyclopedia of Earth
Encyclopedia of Earth: Copper
Information about the element, Copper, atomic number 29. Covers its history, sources, physical properties, atomic properties, how abundant it is on the Earth, details about permissible exposure, uses, and possible substitutes.
Encyclopedia of Earth
Encyclopedia of Earth: Cobalt
Information about the element, Cobalt, atomic number 27. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations, and its importance to human and to animal health. Also...
Encyclopedia of Earth
Encyclopedia of Earth: Chlorine
Information about the element, Chlorine, atomic number 17. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations.
Encyclopedia of Earth
Encyclopedia of Earth: Cerium
Information about the element, Cerium, atomic number 58. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations.
Encyclopedia of Earth
Encyclopedia of Earth: Bromine
Information about the element, Bromine, atomic number 35. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations. Discusses sources, uses, and substitutes.
Encyclopedia of Earth
Encyclopedia of Earth: Berkelium
Information about the element, Berkelium, atomic number 97. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations.
Encyclopedia of Earth
Encyclopedia of Earth: Barium
Basic information about the element, Barium, atomic number 56. Covers physical and atomic properties, how abundant it is on the Earth, and permissible exposure limits.
Encyclopedia of Earth
Encyclopedia of Earth: Americium
Information about the element, Americium, atomic number 95. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations.
Encyclopedia of Earth
Encyclopedia of Earth: Mercury
Information about the element, Mercury, atomic number 80. Covers physical and atomic properties, where it is found, and health-related regulations. Also discusses its three main forms, uses for mercury, ways it spreads throughout the...
Environmental Chemistry
Environmental chemistry.com: Periodic Table Phosphorus
Excellent source of information on phosphorus including its physical and chemical properties. Highly recommended.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Neodymium
EnvironmentalChemistry.com offers a thorough site all about the element neodymium.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Potassium
As the name of this site implies, this is a huge reference site for elemental information. Whether you are looking for properties or isotopes, this site probably has what you need. Images of structure and electron energy level can be...
Environmental Chemistry
Environmental chemistry.com: Tin
As the name of this site implies, this is a huge reference site for elemental information. Whether you are looking for properties or isotopes, this site probably has what you need. Images of structure and electron energy level can be...
Encyclopedia of Earth
Encyclopedia of Earth: Lead
Information about the heavy metal, Lead, atomic number 82. Gives some interesting historical details about lead's use in the past. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about...
Encyclopedia of Earth
Encyclopedia of Earth: Arsenic
Basic information about the element Arsenic, atomic number 33. Covers physical properties and properties, sources, how abundant it is on the Earth, uses, and toxicity.
CK-12 Foundation
Ck 12: History of the Periodic Table
[Free Registration/Login may be required to access all resource tools.] Students explore the history of the periodic table, and explain how the periodic table was originally organized, compared to the arrangement of the modern periodic...
Other
Swiss Federal Institute of Technology: Pauli's Principle
Provides information concerning Wolfgang Pauli's Exclusion Principle. Contains the periodical table of elements.