Basic Information
Bohr Model
Static
Interactive
Descriptive Numbers
CAS Number
54100-71-9
Mendeleev Number
104
Mass
Atomic Mass
293 Da
Periodic Position
X Position
16
Y Position
7
Period
7
Group
16
Classification
Block
p
Category
Unknown
Goldschmidt
Synthetic
Atomic Radius
Covalent (Pyykko)
175
Temperature
Melting/Freeze (USE)
709 °K
Boiling/Density (USE)
1085 °K
Density
STP
12.9 kg/cm³
Heat
Adiabatic Index
N/A
Etymology
Language Of Origin
English
Origin Of Word
The element was synthesized by the Lawrence Livermore National Laboratory (located in Livermore, California), in collaboration with the Joint Nuclear Research Institute.
Symbol Origin
place name
Etymological Description
This name was given in honor of the Lawrence Livermore National Laboratory, located in the city of Livermore, named after rancher Robert Livermore, and which played a role in the discovery of element. Ununhexium was used as a provisional systematic name.
Discovery & Isolation
Observed/Predicted By
Y. Organizer vd. (Dubna'da newspaper ONAE)
Observed/Discovery Year
2000
Isolated Sample By
Joint Institute for Nuclear Research
Production & Use
Sources
It is obtained by bombarding curium-248 with calcium-48.
Radioactivity
Half Life
120 milliseconds
Lifetime
173 milliseconds
Decay Mode
Alpha Six
Electron Affinity
Electron Affinity (kJ/mol)
74.9
Electron & Quantum
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p4
Quantum Number
a burden
Electron Configuration Semantic
*[Rn] 5f14 6d10 7s2 7p4
Shells-0
2
Shells-1
8
Shells-2
18
Shells-3
32
Shells-4
32
Shells-5
18
Shells-6
6
