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Sulfur, also spelled as sulphur, is a chemical element; it has symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with the chemical formula S8. Elemental sulfur is a bright yellow, crystalline solid at room temperature.
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Sulfur | 32S | 94.8% | 1.00 | infobox |
| Sulfur | 33S | 0.760% | 1.00 | infobox |
| Sulfur | 34S | 4.37% | 1.00 | infobox |
| Sulfur | 35S | trace | 1.00 | infobox |
| Sulfur | 36S | 0.02% | 1.00 | infobox |
| Sulfur | Allotropes | see Allotropes of sulfur | 1.00 | infobox |
| Sulfur | Alternative name | Sulphur (pre-1992 British spelling) | 1.00 | infobox |
| Sulfur | Appearance | Lemon yellow sintered microcrystals | 1.00 | infobox |
| Sulfur | at T (K) | 375 | 1.00 | infobox |
| Sulfur | Atomic number (Z) | 16 | 1.00 | infobox |
| Sulfur | Block | p-block | 1.00 | infobox |
| Sulfur | Boiling point | 717.8 K (444.6 °C, 832.3 °F) | 1.00 | infobox |
| Sulfur | Bulk modulus | 7.7 GPa | 1.00 | infobox |
| Sulfur | CAS Number | 7704-34-9 | 1.00 | infobox |
| Sulfur | Covalent radius | 105±3 pm | 1.00 | infobox |
| Sulfur | Critical point | 1314 K, 20.7 MPa | 1.00 | infobox |
| Sulfur | Crystal structure | alpha (α-S8): orthorhombic (oF128) | 1.00 | infobox |
| Sulfur | Crystal structure | beta (β-S8): monoclinic (mP48) | 1.00 | infobox |
| Sulfur | Density (near r.t.) | alpha (α-S8): 2.07 g/cm3 beta (β-S8): 1.96 g/cm3 gamma (γ-S8): 1.92 g/cm3 | 1.00 | infobox |
| Sulfur | Discovery | before 2000 BCE | 1.00 | infobox |
| Sulfur | Electrical resistivity | 2×1015 Ω⋅m (at 20 °C) (amorphous) | 1.00 | infobox |
| Sulfur | Electron configuration | [Ne] 3s2 3p4 | 1.00 | infobox |
| Sulfur | Electronegativity | Pauling scale: 2.58 | 1.00 | infobox |
| Sulfur | Electrons per shell | 2, 8, 6 | 1.00 | infobox |
| Sulfur | Group | group 16 (chalcogens) | 1.00 | infobox |
| Sulfur | Heat of fusion | beta (β-S8): 1.727 kJ/mol | 1.00 | infobox |
| Sulfur | Heat of vaporization | beta (β-S8): 45 kJ/mol | 1.00 | infobox |
| Sulfur | Ionization energies | 1st: 999.6 kJ/mol | 1.00 | infobox |
| Sulfur | Ionization energies | 2nd: 2252 kJ/mol | 1.00 | infobox |
| Sulfur | Ionization energies | 3rd: 3357 kJ/mol | 1.00 | infobox |
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