Krypton (symbol Kr) is element number 36 of the periodic table and belongs to the “Noble gas” category. Its atomic mass is about 83.798, and its phase under standard conditions is Gas. This element sits in period 4 and group 18 of the periodic table, and its electrons are arranged in shells of 2, 8, 18, 8. The short electron configuration of Krypton is [Ar] 3d¹⁰ 4s² 4p⁶. Known uses of Krypton include Flash lamps, Lasers and Lighting signs.
The electron configuration of Krypton (Kr), with 36 electrons, is shown below. The last shell (shell 4) is highlighted:
Distribution of 36 electrons of Krypton across shells K to N:
The noble gases are the group 18 elements: their outer shell is full, so under normal conditions they are very unreactive.
The atomic number of Krypton (Kr) is 36; that is, every atom of it has 36 protons.
The electron configuration of Krypton (Kr) is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶; in short form it is [Ar] 3d¹⁰ 4s² 4p⁶, and its last shell is 4s² 4p⁶.
The chemical symbol of Krypton is Kr.
Krypton is located in period 4 and group 18 and belongs to the “Noble gas” category.
The atomic mass of Krypton is about 83.798 (atomic mass units).
The phase of Krypton under standard conditions is Gas.
Uses of Krypton include Flash lamps, Lasers and Lighting signs.
Krypton was discovered by William Ramsay in 1898.
Helium (He)Neon (Ne)Argon (Ar)Xenon (Xe)Radon (Rn)Oganesson (Og)
Helium (He)Neon (Ne)Argon (Ar)Xenon (Xe)Radon (Rn)Oganesson (Og)
