Silicon (Si) Properties |
ASilicon
(ASi)
Properties 1/ |
Nuclear (14 protons/electrons)
- Atomic Number: 14
- Atomic Mass: 28.086
- Atomic Energy: 0.0419 Ergs
- Group: 14; Period: 3
- Family: Metalloids
- Bonding Radius: 1.11 Angstroms
- Atomic Radius: 1.46 Angstroms
- Atomic Volume: 12.1 cm3mol-1
- 21
Isotopes: 22Si
to 42Si
- Stable Isotopes: 28Si, 29Si,
30Si
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Nuclear (14 Aprotons/positrons)
- Atomic Number: 14
- Atomic Mass: 28.086
- Atomic Energy: 0.0419 Ergs
- Group: 14; Period: 3
- Family: Metalloids
- Bonding Radius: 1.11 Angstroms
- Atomic Radius: 1.46 Angstroms
- Atomic Volume: 12.1 cm3mol-1
- 21 A Isotopes: 22ASi
to 42ASi
- Stable A Isotopes: 28ASi,
29ASi, 30ASi
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Physical
- Hard dark gray non-metal
- Density: 2.33 g cm-3
- Melting Point: 1,410 oC
- Boiling Point: 2,355 oC
- Specific Heat: 0.71 J g-1 K-1
- Heat of Vaporization: 384.2 kJ mol-1
- Heat of Fusion: 50.55 kJ mol-1
- Electrical Conductivity: 2.5 10-6 cm-1 Ohm-1
- Thermal Conductivity: 1.48 W cm-1 K-1
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Physical
- Hard dark gray non-metal
- Density: 2.33 g/cm-3
- Melting Point: 1,410 oC
- Boiling Point: 2,355 oC
- Specific Heat: 0.71J g-1 K-1
- Heat of Vaporization: 384.2 kJ mol-1
- Heat of Fusion: 50.55 kJ mol-1
- Electrical Conductivity: 2.5 10-6 cm-1 Ohm-1
- Thermal Conductivity: 1.48 W cm-1 K-1
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Chemical
- Valance Number: -4, +2, +4,
- Electron Configuration: 2,8,4
- Electronegativity: 1.90
- 1st Ionization Potential: 8.15 Volts
- 2nd Ionization Potential: 16.3 Volts
- 3rd Ionization Potential: 33.5 Volts
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Chemical
- Valance Number: +4, -2, -4,
- Positron Configuration: 2,8,4
- Positronpositivity: 1.90
- 1st Ionization Potential: 8.15 Volts
- 2nd Ionization Potential: 16.3 Volts
- 3rd Ionization Potential: 33.5 Volts
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Identified by Jons
Berzelius
Sweden in 1823
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Identified by Norm Hansen in 2001
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