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Periodic Table

Ground State Electron Configuration of Ununhexium

  2,8,18,32,
  32,18,6  

 

 

O
8
S
16
Se 
34
Te
52
Po
84
Uuh
116
Uhh
166
Buh
216

Ununhexium

SymbolUuh
 Eka-Po, Eka-Polonium alkaline-earth metal Radioactive Artificially Produced
Atomic Number116
Relative Atomic Mass
12C = 12.0000		[ 293 ]  Uuh atomic weights Herman H. Rosenfeld
Significant Atomic Mass297
Neutrons  181
Atomic Radius  pm-
First Ionisation Energy
kJ mol -1		-
Ionization energy (eV)-
Electronegativity-
Density  kg m -3-
Molar Volume   cm 3-
Thermal Conductivity
W m -1 K -1		-
Melting Point  K-
Boiling Point  K-
Phase at Room TemperatureExpected to be a Solid
Number of Isotopes5
Isotopes of superheavy elements289  Uuh   ? ms   
290  Uuh   14.4 ms 
291  Uuh   18 ms
292  Uuh   18 ms  
293  Uuh   61 ms
 
Inner/outer Shells
  4  
+
  3  
 = 7
Inner/outer Orbitals
  60  
+
  56  
 = 116
Filling Orbital
  7p 4  
Ground State Electron Configuration
[Rn]   5f 14     6d 10     7p 4   
Ground State Electron Configuration with 
free Orbitals (n= 2)

 

  0,0,0,0,0,0,2  
Ground State Electron Configuration with free Orbitals of Ununhexium

Ground State Electron Configuration with compressed Orbitals  (n= 162)

 

  0,0,0,0,18,54,90  
Ground State Electron Configuration with compressed Orbitals of Ununhexium
 
Singularity
280= 
60
+
56
+
2
+
162
 
 spd fghij
12       
226      
32610     
4261014    
526101418   
62610141822  
72421014182226 
8        
 
Term Symbol3P2

Joint Institutte for Nuclear Research

First prepared in 2000 by (Yuri Tsolakovich Oganessian), and co-workers at the / Flerov Laboratory of Nuclear Reactions, FLNR / JINR, (Dubna), Russia. 
CAS Reg-ID:54100-71-9
Name Derived FromIUPAC

Ununhexium is pronounced as oon-oon-HEX-i-em.

[Picture]

Decay of Ununhexium

Uuh decay

Pure Appl. Chem., Vol. 78, No. 5, pp. 889–904, 2006. Yu.Ts. Oganessian "Synthesis and decay properties of superheavy elements"  Synthesis and decay properties of superheavy elements
 

[Picture]

http://159.93.28.88/flnr/elm116_scnd.html

http://159.93.28.88/flnr/elm116p.html
  

The second atom of 116 has been synthesized 
From: Dubna: Science, Cooperation, Progress, 19 (3557) (11 May 2001)
 

[Picture]

The Oganessian et al. collaborations all report on one event in which

  248 Cm + 48 Ca is used to produce a decay chain commencing with 292116, followed by well-reproduced   a-decay sequence assigned to the otherwise unknown 288114 and 284112 and terminating in spontaneous fission of previously unknown 280 Ds. The decay energies and lifetimes of three events for 288 114 are internally redundant, but no link to recognized nuclei occurs.

24896Cm + 4820Ca → 292116Uuh + 4 n

The Dubna collaborations have performed careful, high-quality studies whose acknowledgment as discoveries is unfortunately not yet warranted because of unsecured connection to known descendents or of no observed elemental signatures (such as well-resolved X-ray energies).

Yu. Ts. Oganessian, V. K. Utyonkov, Yu. V. Lobanov, F. Sh. Abdullin, A. N. Polyakov, I. V. Shirokovsky, Yu. S. Tsyganov, G. G. Gulbekian, S. L. Bogomolov, B. N. Gikal, A. N. Mezentsev, S. Iliev, V. G. Subbotin, A. M. Sukhov, O. V. Ivanov, G. V. Buklanov, K. Subotic, M. G. Itkis, K. J. Moody, J. F. Wild, N. J. Stoyer, M. A. Stoyer, R. W. Lougheed, C. A. Laue, Ye. A. Karelin, A. N. Tatarinov. Observation of the decay of 262 116 , Phys. Rev. C 63, 011301/1011301/2 (2001).

Yu. Ts. Oganessian, V. K. Utyonkov, K. J. Moody. Synthesis of 292 116 in the 248 Cm + 48 Ca reaction , Phys. Atom. Nucl. 64, 13491355 (2001).

  [Picture]

For completeness, we note the Ninov et al. Berkeley collaboration report

V. Ninov, K. E. Gregorich, W. Loveland, A. Ghiorso, D. C. Hoffman, D. M. Lee, H. Nitsche, W. J. Swiatecki, U. W. Kirbach, C. A. Laue, J. L. Adams, J. B. Patin, D. A. Shaughnessy, D. A. Strellis, P. A. Wilk. Observation of superheavy nuclei produced in the reaction of Kr-86 with Pb-208, Phys. Rev. Lett. 83, 11041107 (1999).

on the reaction 86 Kr + 208 Pb leading to the observation of three chains terminating in 269 Sg and passing through observed intermediate 289 116. Retraction of results appears in:

V. Ninov, K. E. Gregorich, W. Loveland, A. Ghiorso, D. C. Hoffman, D. M. Lee, H.
Nitsche, W. J. Swiatecki, U. W. Kirbach, C. A. Laue, J. L. Adams, J. B. Patin, D. A.
Shaughnessy, D. A. Strellis, P. A. Wilk. Editorial note: Observation of superheavy nuclei
produced in the reaction of 86 Kr with 208 Pb 

[Phys. Rev. Lett. 83, 1104 (1999)], Phys. Rev. Lett. 89, 039901 (2002).
  

[Picture]

APSIDIUM    Created:    

2002-09-01

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