36 Kr Krypton 83,798 u

Krypton

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Période
4
Groupe
18
Bloc
p-bloc
Phase (STP)
Gas

Krypton is a noble gas used in certain fluorescent lamps and photographic flashes. Its spectral lines were once used to define the meter.

Apparence: Colorless gas, white solid

Propriétés physiques

Masse atomique 83.798 u
Densité 0.003749 g/cm³
Point de fusion -157.4 °C
Point d'ébullition -153.2 °C
Phase à STP Gas
Rayon atomique 88.0 pm

Propriétés électroniques

Électronégativité 3.0
Énergie d'ionisation 1350.8 eV
Électrons de valence 8

Configuration électronique

Configuration [Ar] 3d¹⁰ 4s² 4p⁶

Electron Shell Configuration

Krypton electron shell configuration Kr 2e⁻ 8e⁻ 18e⁻ 8e⁻

Position in Periodic Table

Krypton position in the periodic table Kr

Découverte

Découvert par: William Ramsay
Année: 1898

Tableau périodique

Lanthanides Actinides

Plus de Gaz Noble

Frequently Asked Questions

What is Krypton?
Krypton (Kr) is a chemical element with atomic number 36. It is a gas at standard temperature and pressure, classified as a gaz noble.
What are the key properties of Krypton?
Krypton has an atomic mass of 83.798 u, density of 0.003749 g/cm³, melting point of -157.4°C, boiling point of -153.2°C.
What is the electron configuration of Krypton?
The electron configuration of Krypton is [Ar] 3d10 4s2 4p6. It is in the p-block of the periodic table.
Who discovered Krypton?
Krypton was discovered by William Ramsay in 1898.
What is the electronegativity of Krypton?
Krypton has an electronegativity of 3.0 on the Pauling scale.