Au Periodic Table

Element Gold - Au

Comprehensive data on the chemical element Gold is provided on this page; including scores of properties, element names in many languages, most known nuclides of Gold. 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.

Gold Menu

Periodic Table of Elements Element Gold - Au Comprehensive data on the chemical element Gold is provided on this page; including scores of properties, element names in many languages, most known nuclides of Gold. Common chemical compounds are also provided for many elements. Periodic Table of Elements The periodic table is the tabular arrangement of all the chemical elements on the basis of their respective atomic numbers. In the periodic table, the vertical columns are called ‘groups’ and the horizontal rows are called ‘periods’. Gold is a chemical element with the symbol Au (from Latin: aurum) and atomic number 79, making it one of the higher atomic number elements that occur naturally. In a pure form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal and a group 11 element. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Gold Au (Element 79) of Periodic Table. In Newton Desk, Periodic Table 1 Comment 24,805 views 8 79 Au (Gold) Flashcard of Gold. Of all the elements, Apparence of pure gold (24 carat) is the most beautiful.

  • Gold Page One
  • Gold Page Two

Overview of Gold

  • Atomic Number: 79
  • Group: 11
  • Period: 6
  • Series: Transition Metals

Gold's Name in Other Languages

  • Latin: Aurum
  • Czech: Zlato
  • Croatian: Zlato
  • French: Or
  • German: Gold - s
  • Italian: Oro
  • Norwegian: Gull
  • Portuguese: Ouro
  • Russian: Золото
  • Spanish: Oro
  • Swedish: Guld

Atomic Structure of Gold

  • Atomic Radius: 1.79Å
  • Atomic Volume: 10.2cm3/mol
  • Covalent Radius: 1.34Å
  • Cross Section (Thermal Neutron Capture)σa/barns: 98.7
  • Crystal Structure: Cubic face centered
  • Electron Configuration:
    1s2 2s2p6 3s2p6d10 4s2p6d10f14 5s2p6d10 6s1
  • Electrons per Energy Level: 2,8,18,32,18,1
    Shell Model
  • Ionic Radius: 0.85Å
  • Filling Orbital: 5d10
  • Number of Electrons (with no charge): 79
  • Number of Neutrons (most common/stable nuclide): 118
  • Number of Protons: 79
  • Oxidation States:3,1
  • Valence Electrons: 5d10 6s1

Chemical Properties of Gold

  • Electrochemical Equivalent: 2.4496g/amp-hr
  • Electron Work Function: 5.1eV
  • Electronegativity: 2.54 (Pauling); 1.42 (Allrod Rochow)
  • Heat of Fusion: 12.55kJ/mol
  • Incompatibilities:
  • Ionization Potential
    • First: 9.225
    • Second: 20.521
  • Valence Electron Potential (-eV): 51

Physical Properties of Gold

  • Atomic Mass Average: 196.9665
  • Boiling Point: 3080K 2807°C 5085°F
  • Coefficient of lineal thermal expansion/K-1: 14.16E-6
  • Conductivity
    Electrical: 0.452 106/cm Ω
    Thermal: 3.17 W/cmK
  • Density: 19.32g/cc @ 300K
  • Description:
    Soft bright yellow transition metal.
  • Elastic Modulus:
    • Bulk: 171/GPa
    • Rigidity: 26/GPa
    • Youngs: 78.5/GPa
  • Enthalpy of Atomization: 364 kJ/mole @ 25°C
  • Enthalpy of Fusion: 12.55 kJ/mole
  • Enthalpy of Vaporization: 324.4 kJ/mole
  • Flammablity Class:
  • Freezing Point:see melting point
  • Hardness Scale
    • Brinell: 2450 MN m-2
    • Mohs: 2.5
    • Vickers: 216 MN m-2
  • Heat of Vaporization: 334.4kJ/mol
  • Melting Point: 1337.73K 1064.58°C 1948.24°F
  • Molar Volume: 10.2 cm3/mole
  • Optical Reflectivity: 95%
  • Physical State (at 20°C & 1atm): Solid
  • Specific Heat: 0.128J/gK
  • Vapor Pressure = [email protected]°C

Regulatory / Health

  • CAS Number
    • 7440-57-5
  • 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: (0.1-4.2)E-4
    • Bone/p.p.m: 0.016
    • Liver/p.p.m: 0.0004
    • Muscle/p.p.m: n/a
    • Daily Dietary Intake: n/a
    • Total Mass In Avg. 70kg human: 0.2 mg
  • Discovery Year: Unknown
  • Name Origin:
    Gold from old English word geolo (yellow) Au from Latin: aurum (gold).
  • Abundance of Gold:
    • Earth's Crust/p.p.m.: 0.0011
    • Seawater/p.p.m.: 0.00001
    • Atmosphere/p.p.m.: N/A
    • Sun (Relative to H=1E12): 5.6
  • Sources of Gold:
    Found in quartz veins in in extrusive rocks, with copper ore and native metals. Around 1,400 tons are produced each year world wide. Primary mining areas are South Africa, USA, Canada and Russia.
  • Uses of Gold:
    Very malleable. Used in electronics, jewelry dental crowns and coins. Supposedly around half of the world's supply of gold is stored in the United States Treasury Department's gold depository in Fort Knox Kentucky, which is considered to be one of the most secure buildings in the world.
  • Additional Notes:
    Gold is poorly absorbed by the body. Gold-based anti-arthritics can cause liver and/or kidney damage.

Gold Menu

  • Gold Page One
  • Gold Page Two

References

Table

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.

Related Resources

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    Introduces stoichiometry and explains the differences between molarity, molality and normality.
  • Molar Mass Calculations and Javascript Calculator
    Molar mass calculations are explained and there is a JavaScript calculator to aid calculations.
  • Chemical Database
    This database focuses on the most common chemical compounds used in the home and industry.

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Au Periodic Table

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Alternative Titles: Au, aurum

Gold (Au), chemical element, a dense lustrous yellow preciousmetal of Group 11 (Ib), Period 6, of the periodic table. Gold has several qualities that have made it exceptionally valuable throughout history. It is attractive in colour and brightness, durable to the point of virtual indestructibility, highly malleable, and usually found in nature in a comparatively pure form. The history of gold is unequaled by that of any other metal because of its perceived value from earliest times.

118 Names and Symbols of the Periodic Table Quiz
The periodic table is made up of 118 elements. How well do you know their symbols? In this quiz you’ll be shown all 118 chemical symbols, and you’ll need to choose the name of the chemical element that each one represents.
Element Properties
atomic number79
atomic weight196.96657
melting point1,063 °C (1,945 °F)
boiling point2,966 °C (5,371 °F)
specific gravity19.3 at 20 °C (68 °F)
oxidation states+1, +3
electron configuration[Xe]4f145d106s1
Quick Facts

Au Ag Periodic Table

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