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Gadolinium-Anti
Gadolinium
Gadolinium was named from the mineral gadolinite
Gadolinium (Gd) Properties |
AGadolinium (AGd)
Properties 1/ |
Nuclear (64 protons/electrons)
- Atomic Number: 64
- Atomic Mass: 157.25
- Atomic Energy: 0.235 Ergs
- Group: 3; Period: 6
- Family: Rare Earth:
Lanthanide Series
- Bonding Radius: 1.61 Angstroms
- Atomic Radius: 2.54 Angstroms
- Atomic Volume: 19.9 cm3mol-1
- 34
Isotopes: 136Gd to 169Gd
- Stable Isotopes: 152Gd,
154Gd, 155Gd,
156Gd, 157Gd,
158Gd, 160Gd
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Nuclear (64 Aprotons/positrons)
- Atomic Number: 64
- Atomic Mass: 157.25
- Atomic Energy: 0.235 Ergs
- Group: 3; Period: 6
- Family: Rare Earth:
Lanthanide Series
- Bonding Radius: 1.61 Angstroms
- Atomic Radius: 2.54 Angstroms
- Atomic Volume: 19.9 cm3mol-1
- 34 A Isotopes: 136AGd
to 169AGd
- Stable AIsotopes: 152AGd,
154AGd, 155AGd,
156AGd, 157AGd,
158AGd, 160AGd
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Physical
- Silver-white metal
- Density: 7.90 g cm-3
- Melting Point: 1,311 oC
- Boiling Point: 3,233 oC
- Specific Heat: 0.23 J g-1 K-1
- Heat of Vaporization: 359.4 kJ mol-1
- Heat of Fusion: 10.1 kJ mol-1
- Electrical Conductivity: 0.00736 106 cm-1 Ohm-1
- Thermal Conductivity: 0.106 W cm-1 K-1
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Physical
- Silver-white metal
- Density: 7.90 g/cm-3
- Melting Point: 1,311 oC
- Boiling Point: 3,233 oC
- Specific Heat: 0.23 J g-1 K-1
- Heat of Vaporization: 359.4 kJ mol-1
- Heat of Fusion: 10.1 kJ mol-1
- Electrical Conductivity: 0.00736 106 cm-1 Ohm-1
- Thermal Conductivity: 0.106 W cm-1 K-1
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Chemical
- Valance Number: +3
- Electron Configuration: 2,8,18,25,9,2
- Electronegativity: 1.20
- 1st Ionization Potential: 6.2 Volts
- 2nd Ionization Potential: 12.1 Volts
- 3rd Ionization Potential: 20.6 Volts
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Chemical
- Valance Number: -3
- Positron Configuration: 2,8,18,25,9,2
- Positronpositivity: 1.20
- 1st Ionization Potential: 6.2 Volts
- 2nd Ionization Potential: 12.1 Volts
- 3rd Ionization Potential: 20.6 Volts
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Identified by Jean de Marignac
Switzerland in 1880.
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Identified by Norm Hansen in 2001
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1/ Superscript
A
before the element/symbol indicates the
element is antimatter.
157AGd is an AntiGadolinium element with an atomic mass of
157.
See Rosetta Stone for Matter &
Antimatter Definitions |
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