36
Kr
Krypton
Krypton
Krypton (Kr)
Noble Gases · Gas · Period 4 · Group 18
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Element Properties
- Atomic Number
- 36
- Symbol
- Kr
- Atomic Mass
- 83.8
- Category
- Noble Gases
- Standard State
- Gas
- Period
- 4
- Group
- 18
- Electronegativity
- 3
- Atomic Radius
- 202
- Ionization Energy
- 14
- Electron Affinity
- —
- Oxidation States
- 0
- Melting Point
- 115.79 K (-157.36 °C)
- Boiling Point
- 119.93 K (-153.22 °C)
- Density
- 0.003733
- Electron Configuration
- [Ar]4s2 3d10 4p6
- Year Discovered
- 1898
Frequently asked questions
What is the atomic number of Krypton?
The atomic number of Krypton is 36, which equals the number of protons in its nucleus.
What is the atomic mass of Krypton?
The atomic mass of Krypton is approximately 83.8 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Krypton?
The electron configuration of Krypton is [Ar]4s2 3d10 4p6.
Where is Krypton in the periodic table?
Krypton is located in period 4, group 18.
When was Krypton discovered?
Krypton was discovered in 1898.
Related elements
Same group
2
He
Helium
4.003
10
Ne
Neon
20.18
18
Ar
Argon
39.9
54
Xe
Xenon
131.29
86
Rn
Radon
222.018
118
Og
Oganesson
295.216