Zn

Zinc

Identification

CAS Number: 7440-66-6

Discoverer: Known to the ancients.

Discovery Location: Germany

Properties

Atomic Mass: 65.38 →Density: 7.134 g/cm³ →

Crust Abundance: 70 mg/kg

Crystal Structure: HEX

Atomic Dimensions

Atomic Radius: 135 pm →

Atomic Radius (Rahm): 222.00000000000003 pm

Covalent Radius: 122 pm →

Van der Waals Radius: 200.99999999999997 pm

Metallic Radius: 121 pm

Atomic Volume: 9.2 cm³/mol

Lattice Constant: 2.66 Å

Thermodynamics

Melting Point: 692.73 K →Boiling Point: 1180 K →Specific Heat: 0.388 J/(g·K) →Thermal Conductivity: 116 W/(m·K) →Heat of Fusion: 7.28 kJ/mol →Heat of Vaporization: 114.8 kJ/mol →

Heat of Formation: 130.4 kJ/mol

Electronic Structure

Electron Config: [Ar] 3d10 4s2

Block: d

Period: 4 →Group: 12 →Electronegativity: 1.65 →

Oxidation States: +2

Abundance & Geochemistry

Crust Abundance: 70 mg/kg

Sea Abundance: 0.0049 mg/L

Geochemical Class: first series transition metal

Goldschmidt Class: chalcophile

About

Blue-white metallic element. Occurs in multiple compounds naturally. Five stable isotopes are six radioactive isotopes have been found. Chemically a reactive metal, combines with oxygen and other non-metals, reacts with dilute acids to release hydrogen.

Isotopes

Zn-64 64 49.17%

Zn-66 66 27.73%

Zn-68 68 18.45%

Zn-67 67 4.04%

Zn-70 70 0.6100%