Skip to main content

Krypton

ADVERTISEMENT
Identification
Molecular formula
Kr
CAS number
7439-90-9
IUPAC name
krypton
State
State
Krypton is a gas at room temperature, existing as a monatomic noble gas. It remains stable and unreactive under most conditions, emphasizing its inert nature.
Melting point (Celsius)
-157.37
Melting point (Kelvin)
115.78
Boiling point (Celsius)
-153.42
Boiling point (Kelvin)
119.74
General information
Molecular weight
83.80g/mol
Molar mass
83.7980g/mol
Density
3.7490g/cm3
Appearence
Krypton is a colorless, odorless, and tasteless noble gas. It is typically found as a gas at room temperature and is used in various lighting products such as fluorescent lamps where it provides a bright white light. Krypton does not form stable compounds easily and thus remains in its gaseous molecular form under normal conditions.
Comment on solubility

Solubility of Krypton (Kr)

Krypton (84Kr) is a member of the noble gases, a group characterized by their lack of reactivity. As a consequence:

  • Solubility in Water: Krypton is very poorly soluble in water, with an approximate solubility of only 1.1 cm3 per 100 cm3 of water at 20°C.
  • Gas Behavior: As an inert gas, Kr does not readily interact with any water molecules, leading to its limited solubility.
  • Effect of Temperature: Solubility generally decreases with increasing temperature for gases, and krypton is no exception.

In the context of organic solvents, krypton maintains a similarly low level of solubility due to its nonpolar characteristics:

  • Nonpolar Nature: Krypton does not favor interaction with polar solvents.
  • Solvent Interaction: It may exhibit slightly higher solubility in nonpolar solvents, although specific data is scarce.

Overall, the insolubility of krypton indicates its unique role in chemical applications where low reactivity and gas properties are required. As such, it is noteworthy that while it may not dissolve well, it plays an essential role in conditions where inert environments are necessary.

Interesting facts

Interesting Facts About Krypton (Kr)

Krypton is a fascinating noble gas that belongs to the group of elements known for their low reactivity. Here are some intriguing aspects of this colorless, odorless gas:

  • Discovery: Krypton was discovered in 1898 by the British scientists Sir William Ramsay and Morris Travers while they were studying liquefied air. This makes it one of the later additions to the periodic table.
  • Noble Gas Family: As a member of the noble gases, krypton is characterized by its full valence electron shell, which grants it remarkable stability and low chemical reactivity.
  • Abundance: Though krypton makes up only about 0.0001% of Earth's atmosphere, it can be found in trace amounts in various natural sources, including some minerals and in the emissions of certain types of light.
  • Uses: Krypton has several practical applications, such as:
    • Being used in fluorescent lamps and photography flash tubes due to its ability to produce a bright white light.
    • Utilized in high-performance lasers for a range of scientific and industrial applications.
    • Employed in the production of certain types of insulated windows to improve their energy efficiency.
  • Interesting Fact: The name "krypton" comes from the Greek word kryptos, meaning "hidden" or "secret," reflecting its rarity in the Earth’s atmosphere.

In conclusion, krypton is more than just a noble gas with elusive characteristics. Its unique properties and applications in modern technology mark its significance in both science and industry. As thrilling as its name suggests, krypton continues to contribute to advancements across various fields.

Synonyms
KRYPTON
7439-90-9
KR
cripton
kripton
krypton atom
Krypton84
Krypton, compressed
5I8I620HVX
CHEBI:49696
KRYPTON [MI]
EINECS 231-098-5
KRYPTON, ELEMENTAL
DTXSID5064675
UNII-5I8I620HVX
krypton hydride
krypton(0)
UN1056
UN1970
[Kr]
36Kr
Krypton, >=99.998%
CHEMBL1233877
DTXCID3047637
CHEBI:49695
DNNSSWSSYDEUBZ-UHFFFAOYSA-N
Krypton, Messer(R) CANGas, 99.99%
Q888
Krypton, refrigerated liquid (cryogenic liquid)
Krypton, compressed [UN1056] [Nonflammable gas]
Krypton, refrigerated liquid (cryogenic liquid) [UN1970] [Nonflammable gas]
231-098-5