Recognised as Chemical element
Krypton
- Kr
- Z = 36
- noble gas
Krypton (Kr) is element 36, a noble gas in period 4 and group 18. Its standard atomic weight is 83.798 Da. Weights follow IUPAC standard atomic weights, 2021 revision.
Identity
SymbolKr
Standard atomic weight83.798atomic mass units (Da)
Mass in kilograms1.3914985 × 10^-25
Categorynoble gas
Group18
Period4
Blockp-block
Electrons in a neutral atom36
Neutrons in the most common isotope48≈
Quantities
Molar mass83.798 g/mol
Mass of one mole83.798 grams
Atoms in one gram7.186497 × 10^21
Mass of one atom1.3914985 × 10^-22 g
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