Sulfur

Koushik 26/06/2026 19:58:08 Updated 26/06/2026 19:58:08

Property	Value
Atomic Number	16
Element	Sulfur
Symbol	S
Atomic Mass	32.06 u
Number of Neutrons	16 (most common isotope, Sulfur-32)
Number of Protons	16
Number of Electrons	16
Period	3
Group	16
Phase	Solid
Radioactive	No
Natural	Yes
Metal	No
Nonmetal	Yes
Metalloid	No
Type	Polyatomic Nonmetal
Atomic Radius	88 pm
Electronegativity	2.58 (Pauling scale)
First Ionization Energy	10.360 eV
Density	2.07 g/cm³
Melting Point	115.21 °C
Boiling Point	444.6 °C
Number of Isotopes	4 stable (Sulfur-32, Sulfur-33, Sulfur-34, Sulfur-36)
Discoverer	Known since ancient times
Year	Unknown
Specific Heat	0.710 J/g·K
Number of Shells	3
Number of Valence Electrons	6