Krypton information, including Technical Data, Safety Data and its properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure, ionization energy, abundance on Earth, conductivity and thermal properties are included.
Krypton is a Block P, Group 18, Period 4 element. The electronic configuration is [Ar] 3d10 4s2 4p6. In its elemental form krypton's CAS number is 7439-90-9. The krypton atom has a radius of 88.pm and it's Van der Waals radius is 202.pm. Krypton was discovered by Sir William Ramsay and Morris W. Travers in 1898.
Krypton Abundance. The following table shows the abundance of krypton and each of its naturally occurring isotopes on Earth along with the atomic mass for each isotope. |
Krypton
Krypton
cripto
Krípton
kriptón
KryptonIsotope |
Atomic Mass |
% Abundance on Earth |
Kr-78 |
77.920386 |
0.35 |
Kr-80 |
79.916378 |
2.25 |
Kr-82 |
81.913485 |
11.6 |
Kr-83 |
82.914136 |
11.5 |
Kr-84 |
83.911507 |
57.0 |
Kr-86 |
85.910610 |
17.3 |
Krypton Safety Data.
The safety data for krypton metal, nanoparticles and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the left margin.
Ionization Energy. The ionization energy for krypton (the least required energy to release a single electron from the atom in it's ground state in the gas phase) is stated in the following table: |
1st Ionization Energy |
1350.77 kJ mol-1 |
2nd Ionization Energy |
2350.39 kJ mol-1 |
3rd Ionization Energy |
3565.16 kJ mol-1 |
Conductivity. As to
krypton's electrical and thermal conductivity, the electrical conductivity measured in terms of electrical resistivity @
20 şC is - ľOcm and its electronegativities (or its ability to draw electrons relative to other elements) is -. The thermal conductivity of
krypton is 0.0095 W m-1 K-1.
Thermal Properties of Krypton. The melting point and boiling point for krypton are stated below. The following chart sets forth the heat of fusion, heat of vaporization and heat of atomization. |
Heat of Fusion |
1.64 kJ mol-1 |
Heat of Vaporization |
9.05 kJ mol-1 |
Heat of Atomization |
0 kJ mol-1 |
| Formula | Atomic Number | Molecular Weight | Electronegativity (Pauling) | Density | Melting Point | Boiling Point |
Vanderwaals radius |
Ionic radius | Energy of first ionization |
| Kr | 36 | 83.798 g.mol -1 | - | 3.749 g/L | -157.36°C | -153.22 °C | .202 nm | - pm | 1350.77 kJ.mol-1 |
| PRODUCT CATALOG | UK Operations | Submicron & Nanopowder | Tolling | Ultra High Purity | Sputtering Target | Crystal Growth | Rod, Plate, Powder, etc. | Foil |
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