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Elements

• 41
• WebElements: Astatine
• Extensive information on history and properties.

• 42
• Wikipedia: Astatine
• Properties of the element, including its history, applications, and characteristics.

• 43
• ChemicalElements.com: Barium
• Basic information, atomic structure, and isotopes.

• 44
• It's Elemental: Barium
• Basic physical and historical information.

• 45
• WebElements: Barium
• Extensive information on history, uses, occurrence, compounds, and properties.

• 46
• Wikipedia: Barium
• Properties of the element, including its history, applications, and characteristics.

• 47
• ChemicalElements.com: Berkelium
• Basic information, atomic structure, and isotopes.

• 48
• It's Elemental: Berkelium
• Basic physical and historical information.

• 49
• WebElements: Berkelium
• Extensive information on history, compounds, and properties.

• 50
• Wilipedia: Berkelium
• Overview of this element, its properties, history and applications.

• 51
• ChemicalElements.com: Beryllium
• Basic information, atomic structure, and table of isotopes.

• 52
• It's Elemental: Beryllium
• Basic physical and historical information.

• 53
• USGS Minerals Information: Beryllium
• Statistics and information on the worldwide supply, demand, and flow of beryllium.

• 54
• WebElements: Beryllium
• Extensive information on history, uses, occurrence, compounds, and properties of the element.

• 55
• Wikipedia: Beryllium
• Properties of the element, including its history, applications, and characteristics.

• 56
• ChemicalElements.com: Bismuth
• Basic information, atomic structure, and table of isotopes.

• 57
• It's Elemental: Bismuth
• Basic physical and historical information.

• 58
• USGS Minerals Information: Bismuth
• Statistics and information on the worldwide supply, demand, and flow of Bismuth. [PDF]

• 59
• WebElements: Bismuth
• Extensive information on history, uses, occurrence, compounds and properties.

• 60
• Wikipedia: Bismuth
• Properties of the element, including its history, applications, and characteristics.