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Elements

• 121
• ChemicalElements.com: Curium
• Basic information, atomic structure, and isotopes.

• 122
• It's Elemental: Curium
• Basic physical and historical information.

• 123
• WebElements: Curium
• Extensive information on history, compounds, and properties.

• 124
• Wikipedia: Darmstadtium
• Basic physical and historical information.

• 125
• ChemicalElements.com: Dubnium
• Diagram of its atomic structure, and basic information.

• 126
• It's Elemental: Dubnium
• Basic physical and historical information.

• 127
• WebElements: Dubnium
• Information on history, isolation, and properties.

• 128
• ChemicalElements.com: Dysprosium
• Basic information, atomic structure, and isotopes table.

• 129
• It's Elemental: Dysprosium
• Basic physical and historical information.

• 130
• WebElements: Dysprosium
• Extensive information on history, uses, occurrence, compounds, and properties.

• 131
• Wikipedia: Dysprosium
• Properties of the element, including its history, applications, and characteristics.

• 132
• ChemicalElements.com: Einsteinium
• Basic information, atomic structure, and table of isotopes.

• 133
• It's Elemental: Einsteinium
• Basic physical and historical information.

• 134
• WebElements: Einsteinium
• Extensive information on history, compounds, and properties.

• 135
• ChemicalElements.com: Erbium
• Basic information, atomic structure, and isotopes.

• 136
• It's Elemental: Erbium
• Basic physical and historical information.

• 137
• WebElements: Erbium
• Extensive information on history, uses, occurrence, compounds, and properties.

• 138
• Wikipedia: Erbium
• Properties of the element, including its history, applications, and characteristics.

• 139
• ChemicalElements.com: Europium
• Basic information, atomic structure, and isotopes.

• 140
• It's Elemental: Europium
• Basic physical and historical information.