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 Atomic No. Order:
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Periodic Table

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  2,8,18,32,   32,18,4  

 

  C
 6 		  Si
14 		Ge
32 		  Sn
50 		  Pb
82 		Uuq
114 		Uhq
164 		Buq
214

Ununquadium

Symbol Uuq
eka-Pb, eka-lead
Atomic Number 114
Relative Atomic Mass
12C = 12.0000 		[ 289 ]
Significant Atomic Mass 291
Neutrons  177
Atomic Radius  pm -
First Ionisation Energy
kJ mol -1 		-
Electronegativity -
Density  kg m -3 -
Molar Volume   cm 3 -
Thermal Conductivity
W m -1 K -1 		-
Melting Point  K -
Boiling Point  K -
Number of Isotopes 4
Isotopes of superheavy elements 286 Uuq  100 ms
287 Uuq  5.5 s
288 Uuq  2.6 s
289 Uuq  21 s - 30.4 s
 
Inner/outer Shells
  4  
+
  3  
 = 7
Inner/outer Orbitals
  60  
+
  54  
 = 114
Filling Orbital
  7p 2  
Ground State Electron Configuration (unconfirmed)
[Rn]     5f 14      6d 10      7p 2    
Ground State Electron Configuration with 
free Orbitals (n= 4)

 

  0,0,0,0,0,0,4  
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Ground State Electron Configuration with compressed Orbitals  (n= 162)

 

  0,0,0,0,18,54,90  
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Singularity
280 = 
60
+
54
+
4
+
162
 
  s p d  f g h i j
1 2              
2 2 6            
3 2 6 10          
4 2 6 10 14        
5 2 6 10 14 18      
6 2 6 10 14 18 22    
7 2 2 4 10 14 18 22 26  
8                
 
Term Symbol -

   Seaborginstitute

Joint Institutte for Nuclear Research

(Flerov Laboratory of Nuclear Reactions, FLNR) of the  (Joint Institute of Nuclear Research, JINR). 

First prepared in 1999

At the Flerov Laboratory of Nuclear Reactions, a group of scientists headed by Professor Yu.Ts.Oganessian in collaboration with the colleagues from the Lawrence Livermore National Laboratory (USA) synthesized a new long-lived (30s) superheavy element of the Periodic Table with atomic number 114 and mass 289. 

Name Derived From IUPAC
 

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Abstract from JINR News, 4 March 1999 
Yu.Ts. Oganessian et al., "Synthesis of nuclei of the superheavy element 114 in reactions induced by 48Ca." Nature 400 (15 July 1999), p. 242-245. "A New Element Synthesized" JINR News 1 (4 March 1999). "114 element: anatomy of a scientific search), Dubna: Science, Cooperation, Progress, Numbers 16-17 (3455-3456) (30 April 1999) 

http://www-cms.llnl.gov/e114/nucphys.html
http://www-cms.llnl.gov/e114/nucchem.html
http://sungraph.jinr.dubna.su/flnr/elm114.html

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The Oganessian et al . collaboration used the reactions 48 Ca + 242 Pu and 48 Ca + 244 Pu to make one observed chain, respectively, each originating with 287 114 and 289 114, respectively, which pass through unknown intermediates and terminate in spontaneous fission. 

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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. Synthesis of supereavy nuclei in the 48 Ca + 244 Pu reaction: 288 114, Phys. Rev. C 62, 041604/1041604/4 (2000).

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, Synthesis of heavy nuclei in 48 Ca + 244 Pu interactions, Phys. Atom. Nucl. 63, 16791687 (2000).

From 48 Ca + 244 Pu, two chains originating with 288 114 end in spontaneous fission of 280 Ds after passing through observed intermediate 284 112. Additionally, from 48 Ca + 248 Cm, one chain ending in spontaneous fission of 280 Ds passes through observed intermediate 288 114.

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The Oganessian et al . collaborations in which 248 Cm or 244 Pu + 48 Ca are used to produce decay chains commencing with 292 116 or 288 114, respectively, followed by a pair of well-reproduced a -decays assigned to the otherwise unknown 288 114 and 284 112 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. In the 244 Pu + 48 Ca study, one chain originating with 289 114 followed by a chain observed through 285 112 and 281 Ds terminates with spontaneous fission at 277 Hs, all previously unknown.

The Dubna collaborations have performed careful, high-quality studies whose acknowledgement 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).

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For completeness, we note the Ninov et al . Berkeley collaboration report on the reaction 86 Kr + 208 Pb leading to observation of three chains terminating in 269 Sg that pass through observed intermediate 285 114. Retraction of results appear 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).

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).

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