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 Atomic No. Order:
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 Alphabetic Order:
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  Periodic Table

  [Picture]

  2, 8, 18,  

  18, 2  

 

 

Zn
30		Cd
48		Hg
80		Uub
112		Uhb
162		Bub
212

Cadmium

SymbolCd
Atomic Number48
Relative Atomic Mass
12C = 12.0000		112.411  (±8)  [Since 1985]
Atomic Radius  pm149
First Ionisation Energy
kJ mol -1		867.6
Ionisation Energy (eV)8.9938
Electronegativity1.69
Density
kg m -3		8650 [293 K]
7996 [m.p.]
Molar Volume  cm 313.00
Thermal Conductivity
W m -1 K -1		96.8 [300 K]
Melting Point  K594.1
Boiling Point  K1038
Number of Isotopes31
Isotope Atomic mass/u Mole fraction106Cd 105.906 458(6) 0.0125(6)
108Cd 107.904 183(6) 0.0089(3)
110Cd 109.903 006(3) 0.1249(18)
111Cd 110.904 182(3) 0.1280(12)
112Cd 111.902 7577(30) 0.2413(21)
113Cd 112.904 4014(30) 0.1222(12)
114Cd 113.903 3586(30) 0.2873(42)
116Cd 115.904 756(3) 0.0749(18)
 
Inner + outer Shells
  3  +  2   =5
Inner + outer Orbitals
  28  +  20   =48
Filling Orbital
  5s 2   
Ground State Electron
Configuration
[Kr]  4d 10    5s 2      
Ground State Electron
Configuration with
free Orbitals (n=6)

 

  0, 0, 0, 0, 6  

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

 

  0, 0, 0, 14, 42  

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Singularity
110= 28+20+6+56
 
 
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
        
7
        
8
        
  
Term Symbol1S 0
DiscoveryThe element was discovered and first isolated by German physician Fredrich Stromeyer (Göttingen, Germany) in 1817.
 
Name Derived FromThe name derives from Greek kadmeia for "calamine (zinc carbonate)", with which it was found as an impurity in nature. It may have been found in furnace flue dust in Thebes, a city in the Boeottia region of central Greece. The mythological king of Phoenicia, Cadmus, founded Thebes and would be a source for the name of the ore. 
 

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APSIDIUM  ©  Created:    2002-07-18 

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