Radon

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Radon Quick Reference

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Notes

Symbol

Rn

Atomic Number

86

Oxidation States

2

less common

0

more common with disagreement

Electron Configuration

Orbital Occupancy

[Xe] 4f14 5d10 6s2 6p6

[Xe] represents the closed-shell electron configuration of xenon

Orbital Filling Order

[Xe] 6s2 4f14 5d10 6p6

[Xe] represents the closed-shell electron configuration of xenon

Term Symbol

1S0

see expanded configuration ...

Ionization Energies

I (1)

10.7485 eV

Electron Affinity

<0 eV

<0 cm-1

Density

gas, 25 °C, 1 atm

9.074 g/L 

liquid, 202.15 K

4.400 g/ml

Molar Volume

solid, the element's solid allotrope existing at the lowest temperature

50.50 cm3/mol

Melting Point

1 atm

202.15 K

Boiling Point

1 atm

211.45 K

Thermal Conductivity

gas

400 K, 1 atm

0.00480 W/(m K)

extrapolated or estimated

350 K, 1 atm

0.00422 W/(m K)

extrapolated or estimated

300 K, 1 atm

0.00364 W/(m K)

extrapolated or estimated

290 K, 1 atm

0.00351 W/(m K)

extrapolated or estimated

280 K, 1 atm

0.00339 W/(m K)

extrapolated or estimated

270 K, 1 atm

0.00327 W/(m K)

extrapolated or estimated

see all 44 conductivities ...

Pyykkö Covalent Radius

single bond

142 pm

double bond

145 pm

triple bond

133 pm

Enthalpy of Fusion

1 atm

2.7 kJ/mol

Enthalpy of Vaporization

1 atm

19.1 kJ/mol

Quantity

Radon Atomic Structure

Notes

Ionization Energies

I (1)

10.7485 eV

Electron Affinity

<0 eV

<0 cm-1

Electron Binding Energies

K    (1s)

98404 eV

LI   (2s)

18049 eV

LII  (2p1/2)

17337 eV

LIII (2p3/2)

14619 eV

see all 22 energies ...

Electron Configuration

Orbital Occupancy

[Xe] 4f14 5d10 6s2 6p6

[Xe] represents the closed-shell electron configuration of xenon

Orbital Filling Order

[Xe] 6s2 4f14 5d10 6p6

[Xe] represents the closed-shell electron configuration of xenon

Term Symbol

1S0

see expanded configuration ...

Clementi-Raimondi Effective Nuclear Charge

1s

Orbital Exponent

84.3341

ζ

Principle Quantum Number

1

n

Effective Nuclear Charge

84.3341

Zeff = ζ × n

2s

Orbital Exponent

31.7068

ζ

Principle Quantum Number

2

n

Effective Nuclear Charge

63.4136

Zeff = ζ × n

see all 15 effective nuclear charges ...

Screening Percentage

81.3%

Fluorescence Yields

ωK

0.967

ωL1

0.142

ωL2

0.451

ωL3

0.384

Coster-Kronig Yields

F12

0.053

F13

0.62 

F23

0.111

Quantity

Radon Physical Properties

Notes

Density

gas, 25 °C, 1 atm

9.074 g/L 

liquid, 202.15 K

4.400 g/ml

Molar Volume

solid, the element's solid allotrope existing at the lowest temperature

50.50 cm3/mol

Physical Form

colorless gas

Gram Atomic Volume

50 cm3

Quantity

Radon Atomic Interaction

Notes

Oxidation States

2

less common

0

more common with disagreement

Mulliken-Jaffe Electronegativity

orbitalp

2.12

Allred-Rochow Electronegativity

2.06

Configuration Energy

electron volt units

15.4 eV

Pauling units

 2.60  

Nagle Electronegativity

2.27

Cohesive Energy

per mole

19.5 kJ/mol   

per atom

 0.202 eV/atom

Quantity

Radon Thermodynamics

Notes

Melting Point

1 atm

202.15 K

Boiling Point

1 atm

211.45 K

Thermal Conductivity

gas

400 K, 1 atm

0.00480 W/(m K)

extrapolated or estimated

350 K, 1 atm

0.00422 W/(m K)

extrapolated or estimated

300 K, 1 atm

0.00364 W/(m K)

extrapolated or estimated

290 K, 1 atm

0.00351 W/(m K)

extrapolated or estimated

280 K, 1 atm

0.00339 W/(m K)

extrapolated or estimated

270 K, 1 atm

0.00327 W/(m K)

extrapolated or estimated

see all 44 conductivities ...

Critical Point

377.0 K

Vapor Pressure

-62.3 °C

100 kPa

-97.6 °C

10 kPa

-121.4 °C

1 kPa

see all 18 pressures ...

Enthalpy of Fusion

1 atm

2.7 kJ/mol

Enthalpy of Vaporization

1 atm

19.1 kJ/mol

Isobaric Molar Heat Capacity

298.15 K, 1 bar

20.786 J/(mol K)

Isobaric Specific Heat Capacity

298.15 K, 1 bar

0.094 J/(g K)

Quantity

Radon Identification

Notes

CAS Number

10043-92-2

ICSC Number

1322

RTECS Number

VE3750000

UN Number

2982

Quantity

Radon Atomic Size

Notes

Orbital Radius

109.0 pm

Pyykkö Covalent Radius

single bond

142 pm

double bond

145 pm

triple bond

133 pm

Cordero Covalent Radius

150 pm

Quantity

Radon History

Notes

Discovery

date of discovery

1900

discoverer

Friedrich Ernst Dorn

birth

July 27, 1848

death

1916

location of discovery

Halle, Germany

Origin of Element Name

origin

radium

origin description

word

Origin of Element Symbol

symbol: Rn

origin

radon

origin description

element name

Formerly Used or Proposed Element Names and Symbols

name

niton

no matching symbol specified

name

radium emanation

no matching symbol specified

Quantity

Radon Abundances

Notes

Earth's Crust

4×10-13 ppm

Ocean Water

6×10-16 ppm

River Water

2×10-16 ppm

Quantity

Radon Nomenclature

Notes

Element Names in Other Languages

French

radon

German

Radon

Italian

radon (emanio)

Spanish

radón

Portuguese

rádon

Anions or Anionic Substituent Groups

radonide

Cations or Cationic Substituent Groups

radon

Ligands

radonido

Heteroatomic Anion

radonate

'a' Term—Substitutive Nomenclature

radona

'y' Term—Chains and Rings Nomenclature

radony

References    (Click the button next to a value above to see complete citation information for that entry)

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