Extended Periodic Table
      

 Atomic No. Order:
  [Picture]

 Alphabetic Order:
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  Periodic Table

  Ground State Electron Configuration

  2, 8, 18,  

  9, 2  

 

 

  Sc
 21		Y
39		  La
  57 		  Ac
 89		Ubu
121		Usu
171		Bbu
221

  Yttrium                     Truss Element

SymbolY
Atomic Number39
Relative Atomic Mass
12C = 12.0000		88.905 85 (±2)
[Since 1985]
Atomic Radius  pm181
First Ionisation Energy
kJ mol-1		616
Ionisation Energy (eV)6.2171
Electronegativity1.22
Density   kg m-34469 [293 K]
Molar Volume  cm319.89
Thermal Conductivity
W m-1 K-1		17.2 [300 K]
Melting Point  K1795
Boiling Point  K3611
Number of Isotopes32
Isotope Atomic mass/u Mole fraction  89Y 88.905 8485(26) 1.0000
Inner + outer Shells
  3  +  2   =5
Inner + outer Orbitals
  28  +  11   =39
Filling Orbital
  4d 1   
Ground State Electron
Configuration
[Kr]  4d 1    5s 2      
Ground State Electron
Configuration with
free Orbitals (n=15)

 

  0, 0, 0, 9, 6  

[Picture]
Ground State Electron
Configuration with
compressed Orbitals (n=56)

 

  0, 0, 0, 14, 42  

[Picture]
 
Singularity
110= 28+11+15+56
 
 
s
p
d
 f
g
h
i
j
1
2
       
2
2
6
      
3
2
6
10
     
4
2
6
1
9

14

    
5
26

10

14

18
   
6
        
7
        
8
        
  
Term Symbol2 D 3/2
DiscoveryIn 1794, the Finnish chemist Johan Gadolin (Åbo, Finland) discovered yttrium in the mineral ytterbite, which was later renamed gadolinite for Gadolin. Gadolin originally called the element ytterbium after ytterbite. The name was subsequently shortened to yttrium, and later another element was given the name ytterbium. The Swedish surgeon and chemist Carl-Gustav Mosander separated the element in 1843.
 
Name  Derived FromThe name derives from the Swedish village of Ytterby where the mineral gadolinite was found. 
 

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APSIDIUM  ©  Created:    2002-06-04 

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