Radon 86

Atomic No. Order:

Alphabetic Order:

Periodic Table

2, 8, 18, 32,

18, 8

He
2

Ne
10

Ar
18

Kr
36

Xe
54

Rn
86

Uuo
118

Uho
168

Buo
218

Radon

Symbol

Atomic Number

86
Noble gas

Relative Atomic Mass
¹²C = 12.0000

[ 222 ]
222.0176
3.823(4) day

Significant Atomic Mass

220
220.0114
55.6(1) second
Neutrons 134

Isotope

211
210.9906
14.6(2) hour

Atomic Radius pm

145

First Ionisation Energy
kJ mol ^-1

1040

Ionization energy (eV)

10,7485

Electronegativity

Density
kg m ^-3

4400 [l., m.p.]
9.73 [g., 273 K]

Molar Volume cm 3

50.5 [211 K]

Thermal Conductivity
W m ^-1 K ^-1

0.00364 [300 K] (est.)

Melting Point K

202

Boiling Point K

211.4

Number of Isotopes

Inner/outer Shells

Inner/outer Orbitals

Filling Orbital

6p ⁶

Ground State Electron
Configuration

[Xe]

5d ¹⁰

6p ⁶

= [Rn]

Ground State Electron
Configuration with
free Orbital (n= 0)

0, 0, 0, 0, 0, 0

Ground State Electron
Configuration with
compressed Orbitals (n= 96)

0, 0, 0, 0, 32, 64

Singularity

182

	s	p	d	f	g	h	i	j
1	2
2	2	6
3	2	6	10
4	2	6	10	14
5	2	6	10	14	18
6	2	6	10	14	18	22
7
8

Term Symbol

¹S ₀

Discovery

Discovered by F.E. Dorn (Halle, Germany) in 1900

Name Derived From

Named after radium

APSIDIUM	Created:	2002-08-12	086.pdf
	Page update:	2005-09-10	086.pdf