Nobelium

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Nobelium Quick Reference

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Notes

Symbol

No

Atomic Number

102

Oxidation States

3

less common with disagreement

2

more common with disagreement

Pauling Electronegativity

1.3

Electron Configuration

Orbital Occupancy

[Rn] 5f14 7s2

[Rn] represents the closed-shell electron configuration of radon

Orbital Filling Order

[Rn] 7s2 5f14

[Rn] represents the closed-shell electron configuration of radon

Term Symbol

1S0

see expanded configuration ...

Ionization Energies

I (1)

6.65 eV

Melting Point

1100.15 K

Thermal Conductivity

solid, 300 K

10 W/(m K)

estimated

Pyykkö Covalent Radius

single bond

176 pm

double bond

159 pm

Quantity

Nobelium Atomic Structure

Notes

Ionization Energies

I (1)

6.65 eV

Electron Binding Energies

K    (1s)

149208 ± 25 eV

LI   (2s)

 29221 ± 10 eV

LII  (2p1/2)

 28255 ± 11 eV

LIII (2p3/2)

 21851 ± 8 eV 

see all 24 energies ...

Electron Configuration

Orbital Occupancy

[Rn] 5f14 7s2

[Rn] represents the closed-shell electron configuration of radon

Orbital Filling Order

[Rn] 7s2 5f14

[Rn] represents the closed-shell electron configuration of radon

Term Symbol

1S0

see expanded configuration ...

Fluorescence Yields

ωK

0.973

ωL1

0.280

ωL2

0.524

ωL3

0.596

Coster-Kronig Yields

F12

0.02 

F13

0.52 

F23

0.189

Quantity

Nobelium Physical Properties

Notes

Physical Form

metal

Quantity

Nobelium Atomic Interaction

Notes

Oxidation States

3

less common with disagreement

2

more common with disagreement

Pauling Electronegativity

1.3

Allred-Rochow Electronegativity

1.2

Nagle Electronegativity

1.18

Quantity

Nobelium Thermodynamics

Notes

Melting Point

1100.15 K

Thermal Conductivity

solid, 300 K

10 W/(m K)

estimated

Quantity

Nobelium Identification

Notes

CAS Number

10028-14-5

Quantity

Nobelium Atomic Size

Notes

Orbital Radius

158.1 pm

Pyykkö Covalent Radius

single bond

176 pm

double bond

159 pm

Quantity

Nobelium History

Notes

Discovery

shared discovery

date of discovery

1958

discoverer

Albert Ghiorso

birth

July 15, 1915

discoverer

Torbjørn Sikkeland

discoverer

John R. Walton

discoverer

Glenn Theodore Seaborg

birth

April 19, 1912

death

February 25, 1999

location of discovery

Berkeley, California

shared discovery

date of discovery

1964 to 1968

discoverer

G. N. Flerov

location of discovery

Dubna Laboratory, Russia

Origin of Element Name

origin

Alfred Nobel

origin description

person—Swedish chemist and engineer who established the Nobel Prizes

Origin of Element Symbol

symbol: No

origin

nobelium

origin description

element name

Formerly Used or Proposed Element Names and Symbols

name

flerovium

matching symbol

Fl

name

joliot-curium

no matching symbol specified

name

lerovium

no matching symbol specified

name

unnilbium

matching symbol

Unb

Quantity

Nobelium Nomenclature

Notes

Element Names in Other Languages

French

nobélium

German

Nobelium

Italian

nobelio

Spanish

nobelio

Portuguese

nobélio

Anions or Anionic Substituent Groups

nobelide

Cations or Cationic Substituent Groups

nobelium

Ligands

nobelido

Heteroatomic Anion

nobelate

'a' Term—Substitutive Nomenclature

nobela

'y' Term—Chains and Rings Nomenclature

nobely

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

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Ghiorso, A., S. G. Thompson, G. H. Higgins, G. T. Seaborg, M. H. Studier, P. R. Fields, S. M. Fried, H. Diamond, J. F. Mech, G. L. Pyle, J. R. Huizenga, A. Hirsch, W. M. Manning, C. I. Browne, H. L. Smith, and R. W. Spence. "New Elements Einsteinium and Fermium, Atomic Numbers 99 and 100." Physical Review, volume 99, number 3, 1955, pp. 1048–1049. doi:10.1103/PhysRev.99.1048

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