86
Rn
Radon
Noble gas period 6 group 18 p-block discovered: 1900
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 86
- Atomic mass
- 222.01758 a.m.u.
- Electron configuration
- [Xe]6s2 4f14 5d10 6p6
- Atomic radius
- 220 pm
- Ionization energy
- 10.745 eV
- Oxidation states
- 0
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Gas
- Melting point
- 202 K (-71,15 °C)
- Boiling point
- 211.45 K (-61,7 °C)
- Density
- 0.00973 g/cm³
Materials about this element
-
5.4. Аргоноиды
Book page
Лайнус Полинг, Питер Полинг - Химия
Первый элемент в периодической таблице, водород, химически активен и образует огромное число соединений.