Picture of Indium
  

 Atomic No. Order:
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Periodic Table

Ground State Electron Configuration of Indium

  2, 8, 18,  

  18,  3  

 

 

  B
 5		Al
13		  Ga
31		  In
 49		  Tl
 81		Uut
113		Uht
163		But
213

Indium

SymbolIn
Atomic Number49
Relative Atomic Mass
12C = 12.0000		114.818  (±3)   [Since 1991]
Atomic Radius pm163
First Ionisation Energy
kJ mol -1		558.3
Ionisation Energy (eV)5.7864
Electronegativity1.78
Density
kg m -3		7310 [298 K]
7032 [m.p.]
Molar Volume cm 315.71
Thermal Conductivity
W m -1 K -1		81.6 [300 K]
Melting Point K429.32
Boiling Point K2353
Number of Isotopes59
Isotope Atomic mass/u Mole fraction113In 112.904 062(4) 0.0429(5)
115In 114.903 879(40) 0.9571(5)
Inner + outer Shells
  3  +  2   =5
Inner + outer Orbitals
  28  +  21   =49
Filling Orbital
  5p 1   
Ground State Electron
Configuration
[Kr]  4d 10    5s 2    5p 1      
Ground State Electron
Configuration with
free Orbitals (n=5)

 

  0, 0, 0, 0, 5  

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

  0, 0, 0, 14, 42  

Ground State Electron Configuration with compressed Orbitals of Indium
 
Singularity
110= 28+21+5+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
1
5

10

14

18
   
6
        
7
        
8
        
  
Term Symbol2Po1/2
DiscoveryIt was discovered in 1863 by the German physicist Ferdinand Reich and the German metallurgist
Hieronymus Theodor Richter (Freiberg, Germany), while examining zinc blende. They isolated indium in 1867.
 
Name Derived FromThe name derives from the term "indigo" for the indigo-blue line in the element's spark spectrum.
 

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APSIDIUM  ©  Created:    

2002-07-19

 

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