16 - Sulfur polyatomic nonmetal
Discovered by Ancient china in 1809
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.
H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
57-71 La-Lu Lanthanides
89-103 Ac-Lr Actinides
| Shell | Electrons | Orbitals |
|---|---|---|
| 1 | 2 | 2 in 1s |
| 2 | 8 | 2 in 2s + 6 in 2p |
| 3 | 6 | 2 in 3s + 4 in 3p |
lemon yellow sintered microcrystals Appearance
32.1 u Atomic Mass
1 Å Atomic Radius
718 K Boiling Point
16 Group
-2, 2, 4, 6 Common Oxidation States
1.05 Å Covalent Radius
2.07 g/cm³ Density
200 kJ/mol Electron Affinity
1s2 2s2 2p6 3s2 3p4 Electron Configuration
[Ne] 3s2 3p4 Electron Configuration (semantic)
2.58 Electronegativity
16 Electrons
10.4 eV First Ionization Energy
-2, -1, 2, 4, 6 ICSD Oxidation States
999.6, 2252, 3357, 4556, 7004.3, 8495.8, 27107, 31719, 36621, 43177, 48710, 54460, 62930, 68216, 311048, 337138 kJ/mol Ionization Energies
389 K Melting Point
94 Mendeleev Number
22.8 J/(mol·K) Molar Heat
3 Number of Shells
6 Electron Valency
16 Neutrons
16 Atomic Number
10 Number of Isotopes
-2, -1, 1, 2, 3, 4, 5, 6 Oxidation States
3 Period
Solid Phase
16 Protons
2, 8, 6 Electron Shell Occupations
0.71 J/(g K) Specific Heat