Basic Information
Bohr Model
Static
Interactive
Descriptive Numbers
CAS Number
54144-19-3
Mendeleev Number
118
Mass
Atomic Mass
294 Da
Periodic Position
X Position
18
Y Position
7
Period
7
Group
18
Classification
Block
p
Category
Unknown
Goldschmidt
Synthetic
Atomic Radius
Covalent (Pyykko)
157
Temperature
Boiling/Density (USE)
350 °K
Density
STP
4.95 kg/cm³
Heat
Adiabatic Index
N/A
Etymology
Language Of Origin
Russian
Origin Of Word
From physicist Yuri Oganesyan
Meaning
Yuri Okineshan
Symbol Origin
surname, eponym
Etymological Description
Named after Yuri Oganessian, one of the greatest contributors to the field of synthesis of superheavy elements. Also called eka-randon and provisionally ununoctium (Uuo) by the International Union of Pure and Applied Chemistry.
Discovery & Isolation
Observed/Predicted By
Y. Organizer vd. (Dubna'da newspaper ONAE)
Observed/Discovery Year
2002
Discovery Location
Isolated Sample By
Joint Institute for Nuclear Research
Production & Use
Sources
It is obtained by bombarding californium-249 with calcium-48.
Radioactivity
Half Life
5 milliseconds
Lifetime
7 milliseconds
Decay Mode
Alpha Six
Electron Affinity
Electron Affinity (eV)
0.056
Electron Affinity (kJ/mol)
5.40318
Dipole Polarity
Accepted
58
Uncertainty
6
Electron & Quantum
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p6
Quantum Number
1S0
Electron Configuration Semantic
*[Rn] 5f14 6d10 7s2 7p6
Shells-0
2
Shells-1
8
Shells-2
18
Shells-3
32
Shells-4
32
Shells-5
18
Shells-6
8
