Information about the radioactive element, Radium, atomic number 88. Covers physical and atomic properties, how abundant it is on the Earth, and permissible exposure limits.

Information about the metallic element, Gallium, atomic number 31. Covers its discovery, its physical and atomic properties, sources, uses, how abundant it is on the Earth, and permissible exposure limits.

Information about the element, Chromium, atomic number 24. Covers discovery, physical and atomic properties, how abundant it is on the Earth, permissible exposure limits, sources, uses, and potential substitutes.

Information about the semi-metallic element, Boron, atomic number 5. Covers physical and atomic properties, how abundant it is on the Earth, sources, uses, and possible substitutes.

Information about the element Zirconium, atomic number 40. Covers history of its discovery, sources, physical properties, atomic properties, how abundant it is on the Earth, details about permissible exposure, uses, and possible...

Information about the element, Ytterbium, atomic number 70. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations.

Information about the radioactive element, Uranium, atomic number 92. Describes its history, physical and atomic properties, how abundant it is on the Earth, and permissible exposure limits. Also discusses sources, uses, isotopes,...

Information about the element, Thulium, atomic number 69. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations.

A description of the element, Tantalum, atomic number 73. Covers the origin of its name, sources, uses for it in industry, and possible substitutes.

Information about the element, Strontium, atomic number 38. Covers its history, sources, physical properties, atomic properties, how abundant it is on the Earth, details about permissible exposure, uses, and possible substitutes.

Information about the element, Rubidium, atomic number 37. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations.

Information about the element, Lutetium, atomic number 71. Covers physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Information about the element, Vanadium, atomic number 23. Covers its history, sources, physical and atomic properties, prevalence on the Earth, details about any health-related regulations, uses, and possible substitutes.

Information about the element, Titanium, atomic number 22. Covers its initial discovery, physical properties, atomic properties, how abundant it is on the Earth, and details about health-related regulations. Also discusses sources, uses,...

Information about the element, Thorium, atomic number 90. Covers physical properties, atomic properties, how abundant it is on the Earth, where it is found, and details about health-related regulations. Discusses thorium's potential use...