Xenon ∙ xénon ∙ xeno ∙ xenón
group ‘n+n’ / noble gases and (rather) noble metals: R, RO4
- melting point: -111.9°C
- boiling point: -107.1°C
- density: 4.49 g/l
The four isotopes 131mXe, 133Xe, 133mXe, and 135Xe are tracers for nuclear explosions. — Le Petit, 2013
☢ radioisotopes:
Xe-133 (T1/2=5.2 d) fission product
Xe-135 (T1/2=9 h) fission product