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Periodic table
Period 3Group 16
16Solid
S 32.065 Atomic mass · u
Nonmetals

Sulfur

Sulfur or sulphur (see spelling differences) is a chemical element with symbol S and atomic number 16. It is an abundant, multivalent non-metal. Under normal conditions, sulfur atoms form cyclic octatomic molecules with chemical formula S8.

Discovery Ancient (Ancient china)
Sulfur electron shellsS16 protons
K2L8M6
A simplified shell model. Electron positions are illustrative.

Physical properties

Values for the element in its standard state.

Density
1.96g/cm³
Melting point
388K
Boiling point
718K
Atomic radius
102pm
Bonding type
Covalent network
Molar heat
22.75J/(mol·K)

Inside the atom

Electron arrangement and the energy behind its behavior.

Full electron configuration

1s, 2 electrons; 2s, 2 electrons; 2p, 6 electrons; 3s, 2 electrons; 3p, 4 electrons;

[Ne] represents 10 core electrons. The full view shows them explicitly.

16 electrons Orbital order preserved from source

Electronegativity
2.58Pauling scale
First ionization energy
1,000kJ/mol
Electron affinity
200kJ/mol
Van der Waals radius
180pm

About sulfur

Appearance
Lemon yellow sintered microcrystals
Discovery
Ancient (Ancient china)

A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.