Tungsten Atomic Mass
- Consider the following data for tungsten: atomic mass 183.848 mol 2.36 electronegativity electron affinity KJ 78.6 - ron affinity mol ionization energy 770. Mol heat of fusion 35. Mol You may find additional useful data in the ALEKS Data tab.
- Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. Tungsten is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a new element in 1781 and first isolated as a metal in 1783.
Sep 08, 2012 The average atomic mass is calculated by multiplying the mass of each isotope by its abundance and then adding them all up. NOTE: The abundances are given in percent. To get the decimal equivalent of percent, move the decimal point two places to the left. 26.50% = 0.2650 in decimals. W-180: 179.946706 x 0.0012 = 0.22. Element Tungsten (W), Group 6, Atomic Number 74, d-block, Mass 183.84. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
| Isotope | Atomic mass (Da) | Isotopic abundance (amount fraction) |
|---|---|---|
| 180W | 179.946 71(1) | 0.0012(1) |
| 182W | 181.948 206(5) | 0.2650(16) |
| 183W | 182.950 224(5) | 0.1431(4) |
| 184W | 183.950 933(5) | 0.3064(2) |
| 186W | 185.954 365(8) | 0.2843(19) |
In 1969, after evaluating the uncertainties associated with the mass-spectrometric measurements, the Commission assigned a value of Ar(W) = 183.85(3). For a number of years afterthat, in the absence of calibrated mass-spectrometric measurements, the Commission was concerned about adiscrepancy between the recommended atomic weight and the results of earlier chemical determinationsthat yielded values of around Ar(W) = 183.90. In 1991, the Commission changed the recommended value for the atomic weight of tungsten to Ar(W) =183.84(1), based on high-precision measurements with negative thermal ionization mass spectrometry.
© IUPAC 2003
CIAAW
Tungsten
Ar(W) = 183.84(1) since 1991
The name derives from the Swedish tungsten for 'heavy stone'. The symbol W derives fromthe German wolfram, which was found with tin and interfered with the smelting of tin. It was said toeat up tin like a wolf eats up sheep. The element was discovered by the Swedish pharmacist and chemistCarl-Wilhelm Scheele in 1781. Tungsten metal was first isolated by the Spanish chemists FaustoElhuyar and his brother Juan José in 1783.
Atomic Number of Tungsten is 74.
Chemical symbol for Tungsten is W. Number of protons in Tungsten is 74. Atomic weight of Tungsten is 183.84 u or g/mol. Melting point of Tungsten is 3407 °C and its the boiling point is 5927 °C.
» Boiling Point» Melting Point» Abundant» State at STP» Discovery YearAbout Tungsten
This chemical element was discovered at the end of the 18th century and named after a Swedish expression meaning heavy stone. It is a strong shiny light grey color metal, and it is one of the heaviest metals which have a certain importance for life since some types of bacteria have tungsten in their enzymes. It is possible to obtain this metal from minerals, and one more way to obtain it is from its compounds with carbon or oxygen. Tungsten is used in light bulbs production, and it can form very strong alloys with other metals, for further use in producing elements for welding, heating, etc. Chemical compounds of this element have applications in oil and petroleum refining, X-ray tubes, drilling and cutting tools, etc.
Properties of Tungsten Element
| Atomic Number (Z) | 74 |
|---|---|
| Atomic Symbol | W |
| Group | 6 |
| Period | 6 |
| Atomic Weight | 183.84 u |
| Density | 19.25 g/cm3 |
| Melting Point (K) | 3695 K |
| Melting Point (℃) | 3407 °C |
| Boiling Point (K) | 5828 K |
| Boiling Point (℃) | 5927 °C |
| Heat Capacity | 0.132 J/g · K |
| Abundance | 1.3 mg/kg |
| State at STP | Solid |
| Occurrence | Primordial |
| Description | Transition metal |
| Electronegativity (Pauling) χ | 2.36 |
| Ionization Energy (eV) | 7.864 |
| Atomic Radius | 135pm |
| Covalent Radius | 146pm |
| Valence Electrons | 2 |
| Year of Discovery | 1783 |
| Discoverer | Gebrüder de Elhuyar |
What is the Boiling Point of Tungsten?
Tungsten boiling point is 5927 °C. Boiling point of Tungsten in Kelvin is 5828 K.
What is the Melting Point of Tungsten?
Tungsten Atomic Mass In Grams
Tungsten melting point is 3407 °C. Melting point of Tungsten in Kelvin is 3695 K.
How Abundant is Tungsten?
Abundant value of Tungsten is 1.3 mg/kg.
Tig Electrode Color Code
What is the State of Tungsten at Standard Temperature and Pressure (STP)?
Tungsten Electrons
State of Tungsten is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.
When was Tungsten Discovered?
Tungsten was discovered in 1783.