Element Krypton (Kr)

Atomic number 36 · noble gas · Atomic mass 83.798 u

Atomic Mass
83.7980 u
Element Properties
Atomic Number 36
Atomic Mass 83.7980 u
Category noble gas / 稀有气体
Group 18
Period 4
Block P
Electron Configuration [Ar] 3d¹⁰ 4s² 4p⁶
Electronegativity (Pauling) 3
Phase at STP Gas
Density 0.003749 g/cm³
Year Discovered 1898

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