Zn Atomic Mass

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Element Zinc - Zn

Comprehensive data on the chemical element Zinc is provided on this page; including scores of properties, element names in many languages, most known nuclides of Zinc. Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies.

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Overview of Zinc

Atomic Number of Zinc. Atomic Number of Zinc is 30. Chemical symbol for Zinc is Zn. Number of protons in Zinc is 30. Atomic weight of Zinc is 65.38 u or g/mol. Melting point of Zinc is 419,6 °C and its the boiling point is 907 °C. Represented in the periodic table as Zn, zinc is a transition metal, grouped with cadmium and mercury. With the middling atomic number 30, it has five stable isotopes of atomic weight from the dominant zinc 64 to zinc 70, plus an extra 25 radioisotopes.

  • Atomic Number: 30
  • Group: 12
  • Period: 4
  • Series: Transition Metals

Zinc's Name in Other Languages

  • Latin: Zincum
  • Czech: Zinek
  • Croatian: Cink
  • French: Zinc
  • German: Zink - r
  • Italian: Zinco
  • Norwegian: Sink
  • Portuguese: Zinco
  • Russian: Цинк
  • Spanish: Zinc
  • Swedish: Zink

Atomic Structure of Zinc

  • Atomic Radius: 1.53Å
  • Atomic Volume: 9.2cm3/mol
  • Covalent Radius: 1.25Å
  • Cross Section (Thermal Neutron Capture) σa/barns: 1.11
  • Crystal Structure: Hexagonal
  • Electron Configuration:
    1s2 2s2p6 3s2p6d10 4s2
  • Electrons per Energy Level: 2,8,18,2
    Shell Model
  • Ionic Radius: 0.74Å
  • Filling Orbital: 3d10
  • Number of Electrons (with no charge): 30
  • Number of Neutrons (most common/stable nuclide): 35
  • Number of Protons: 30
  • Oxidation States: 2
  • Valence Electrons: 4s2
    Electron Dot Model

Chemical Properties of Zinc

  • Electrochemical Equivalent: 1.22g/amp-hr
  • Electron Work Function: 4.33eV
  • Electronegativity: 1.65 (Pauling); 1.66 (Allrod Rochow)
  • Heat of Fusion: 7.322kJ/mol
  • Incompatibilities:
  • Ionization Potential
    • First: 9.394
    • Second: 17.964
    • Third: 39.722
  • Valence Electron Potential (-eV): 38.9

Physical Properties of Zinc

Atomic mass for zn
  • Atomic Mass Average: 65.39
  • Boiling Point: 1180K 907°C 1665°F
  • Coefficient of lineal thermal expansion/K-1: 25E-6
  • Conductivity
    Electrical: 0.166 106/cm Ω
    Thermal: 1.16 W/cmK
  • Density: 7.13g/cc @ 300K
  • Description:
    Hard, brittle, shiny bluish-white transition metal.
  • Elastic Modulus:
    • Bulk: 69.4/GPa
    • Rigidity: 41.9/GPa
    • Youngs: 104.5/GPa
  • Enthalpy of Atomization: 129.7 kJ/mole @ 25°C
  • Enthalpy of Fusion: 7.32 kJ/mole
  • Enthalpy of Vaporization: 115.5 kJ/mole
  • Flammablity Class:
  • Freezing Point:see melting point
  • Hardness Scale
    • Brinell: 412 MN m-2
    • Mohs: 2.5
  • Heat of Vaporization: 115.3kJ/mol
  • Melting Point: 692.88K 419.73°C 787.51°F
  • Molar Volume: 9.16 cm3/mole
  • Optical Reflectivity: 80%
  • Optical Refractive Index: 1.00205
  • Physical State (at 20°C & 1atm): Solid
  • Specific Heat: 0.39J/gK
  • Vapor Pressure = [email protected]°C

Regulatory / Health

  • CAS Number
    • 7440-66-6
  • OSHAPermissible Exposure Limit (PEL)
    • No limits set by OSHA
  • OSHA PEL Vacated 1989
    • No limits set by OSHA
  • NIOSHRecommended Exposure Limit (REL)
    • No limits set by NIOSH
  • Levels In Humans:
    Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances.
    • Blood/mg dm-3: 7
    • Bone/p.p.m: 75-170
    • Liver/p.p.m: 240
    • Muscle/p.p.m: 240
    • Daily Dietary Intake: 5-40 mg
    • Total Mass In Avg. 70kg human: 2.3 g
  • Discovery Year: Unknown
  • Name Origin:
    German: zink (German for tin).
  • Abundance of Zinc:
    • Earth's Crust/p.p.m.: 75
    • Seawater/p.p.m.:
      • Atlantic Suface: 0.00005
      • Atlantic Deep: 0.0001
      • Pacific Surface: 0.00005
      • Pacific Deep: 0.00052
    • Atmosphere/p.p.m.: N/A
    • Sun (Relative to H=1E12): 28200
  • Sources of Zinc:
    Found in the minerals zinc blende (sphalerite) (ZnS), calamine, franklinite, smithsonite (ZnCO3), willemite, and zincite (ZnO). Annual world wide production is around 5,020,000 tons. Primary mining areas are USA, Canada, Australia, Austria, Russia and Turkey.
  • Uses of Zinc:
    Used to coat other metals (galvanizing) to protect them from rusting. Used in alloys such as brass, bronze, nickel. Also in solder, cosmetics and pigments.
  • Additional Notes:
    Many sources of European origins credit Andreas Marggraf with discovering zink in 1746, however, it had been know in India and China since before the 1500s.

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A list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.

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Atomic Number of Zinc is 30.

Chemical symbol for Zinc is Zn. Number of protons in Zinc is 30. Atomic weight of Zinc is 65.38 u or g/mol. Melting point of Zinc is 419,6 °C and its the boiling point is 907 °C.

» Boiling Point» Melting Point» Abundant» State at STP» Discovery Year

About Zinc

Zinc is a softish metal of light grey color and is one of so called transition metals. Its name comes from a similar German word which is believed to be a copy of an old Persian word meaning stone. It is impossible to find pure zinc on our planet, but it can be extracted from a number of minerals and compounds. Zinc is essential for normal chemical processes in living organisms, and in micro-doses it exists in our enzymes. Large or even medium dozes of zinc can be toxic. This metal is widely used as a galvanizer, in such products as lamp posts, some parts of automobiles, etc. As a part of an alloy with copper called brass, zinc is used for producing parts of musical instruments, and zinc is also used to produce many other alloys. Oxides of this chemical element are used for producing rubber, plastic, textiles, soaps, cosmetics, electrical components, and many other goods.

Properties of Zinc Element

Atomic Number (Z)30
Atomic SymbolZn
Atomic Weight65.38 u
Density7.134 g/cm3
Melting Point (K)692.88 K
Melting Point (℃)419,6 °C
Boiling Point (K)1180 K
Boiling Point (℃)907 °C
Heat Capacity0.388 J/g · K
Abundance70 mg/kg
State at STPSolid
DescriptionTransition metal
Electronegativity (Pauling) χ1.65
Ionization Energy (eV)9.3942
Atomic Radius135pm
Covalent Radius131pm
Van der Waals Radius139
Valence Electrons2
Year of Discoveryprehistoric

What is the Boiling Point of Zinc?

Zinc boiling point is 907 °C. Boiling point of Zinc in Kelvin is 1180 K.

What is the Melting Point of Zinc?

Zinc melting point is 419,6 °C. Melting point of Zinc in Kelvin is 692.88 K.

How Abundant is Zinc?

Abundant value of Zinc is 70 mg/kg.

What is the State of Zinc at Standard Temperature and Pressure (STP)?

State of Zinc is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.

When was Zinc Discovered?

Zn Atomic Mass

Zinc was discovered in prehistoric.

Zinc 64 Atomic Mass