Chemical element
Radon
- Rn
- Z = 86
- noble gas
- No stable isotope
Radon (Rn) is element 86, a noble gas in period 6 and group 18. Its most stable isotope has mass number 222. Weights follow IUPAC standard atomic weights, 2021 revision.
Identity
SymbolRn
Mass number of the most stable isotope222this element has no stable isotope
Mass in kilograms3.6863967 × 10^-25
Categorynoble gas
Group18
Period6
Blockp-block
Electrons in a neutral atom86
Neutrons in the most common isotope136≈
Quantities
Molar mass222 g/mol
Mass of one mole222 grams
Atoms in one gram2.712676 × 10^21
Mass of one atom3.6863967 × 10^-22 g
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Neighbouring elements
The number
Nerdulate something else
Nothing in mind? Surprise me · today’s page