Sulfur (S)
Sulfur is the 16th element, a reactive nonmetal in the p-block. Its standard atomic weight is 32.067.
Sulfur
32.067
What the table records
- Atomic number
- 16
- Standard atomic weight
- 32.067
- Group
- 16
- Period
- 3
- Block
- p-block
- Category
- Reactive nonmetal
- [Ne] 3s2 3p4
- Valence electrons
- 6
- Typical valence
- 2
- Van der Waals radius
- 1.8 Å
- Covalent radius
- 1.05 Å
Molecules containing sulfur
The lightest named structures in this library that contain S.
Sulfur
S · 32.07 g/mol
Hydrosulfide
HS- · 33.08 g/mol
Mercapto
HS · 33.08 g/mol
Hydrogen Sulfide
H₂S · 34.08 g/mol
Sulfonium
H₃S+ · 35.09 g/mol
14616-59-2 (Name error)
HNS · 47.08 g/mol
Mercaptomethanide
CH₃S- · 47.1 g/mol
Methanethiol
CH₄S · 48.11 g/mol
Sulfaniumylazanide
H₃NS · 49.1 g/mol
Thiocyanate
CNS- · 58.09 g/mol
Carbonyl Sulfide
COS · 60.08 g/mol
Thiirane
C₂H₄S · 60.12 g/mol
How to read these numbers
The standard atomic weight is an average over the isotopes as they occur naturally, which is why it is rarely a whole number. It is the figure a molar mass calculation uses. Work in mass spectrometry wants the monoisotopic mass of a single isotope instead, which is a different number.
The two radii are not the same measurement. The covalent radius is half the distance between two bonded atoms of the element; the van der Waals radius is how close a non-bonded atom gets before repulsion takes over, and is always the larger. Space-filling models are drawn with the second, ball-and-stick models with the first — which is why the same molecule looks so different in the two.