Symbol
Eu
  
Na
  
Group Number
Not Available
  
Period Number
6
  
3
  
Block
f block
  
s block
  
Element Family
Lanthanide
  
Alkali
  
Space Group Name
Im_ 3m
  
Im_ 3m
  
Interesting Facts
Not Available
  
- At room temperature Sodium metal is very soft as it can be chopped down into pieces with butter knife.
- The most common compound of Sodium is NaCl (Salt).
  
Sources
Found in Minerals, Mining, Ores of Minerals
  
By Electrolysis Process, Mining
  
History
  
  
Who Discovered
Eugène-Anatole Demarçay
  
Humphry Davy
  
Discovery
In 1896
  
In 1807
  
Abundance
  
  
Abundance In Sun
~0.00000005 %
  
27
Abundance In Earth's Crust
Abundance In Humans
Not Available
  
Uses & Benefits
- Europium metals main uses is in the printing of euro banknotes. These notes glow red under UV light.
-
It is used in low energy light bulbs.
  
- In some nuclear reactors sodium is used as a heat exchanger.
- Compound of Sodium metals called Salt (Sodium chloride) is used in Food.
  
Industrial Uses
Chemical Industry
  
Electrical Industry, Electronic Industry
  
Medical Uses
NA
  
Pharmaceutical Industry
  
Other Uses
Alloys
  
Alloys
  
Biological Properties
  
  
Toxicity
Non Toxic
  
Toxic
  
Present in Human Body
Yes
  
Yes
  
In Blood
Not Available
  
1,970.00 Blood/mg dm-3
  
1
In Bone
Not Available
  
10,000.00 p.p.m.
  
2
Boiling Point
1,597.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery White
  
Silvery White
  
Luster
Lustrous
  
Metallic
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
Vickers Hardness
Not Available
  
Speed of Sound
Not Available
  
3,200.00 m/s
  
24
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Eu
  
Na
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Allred Rochow Electronegativity
Not Available
  
Mulliken-Jaffe Electronegativity
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Not Available
  
Ionization Energies
  
  
1st Energy Level
547.10 kJ/mol
  
99+
495.80 kJ/mol
  
99+
2nd Energy Level
1,085.00 kJ/mol
  
99+
4,562.00 kJ/mol
  
4
3rd Energy Level
2,404.00 kJ/mol
  
99+
6,910.30 kJ/mol
  
6
4th Energy Level
4,120.00 kJ/mol
  
33
9,543.00 kJ/mol
  
5
5th Energy Level
Not Available
  
13,354.00 kJ/mol
  
4
6th Energy Level
Not Available
  
16,613.00 kJ/mol
  
4
7th Energy level
Not Available
  
20,117.00 kJ/mol
  
4
8th Energy Level
Not Available
  
25,496.00 kJ/mol
  
4
9th Energy Level
Not Available
  
28,932.00 kJ/mol
  
4
10th Energy Level
Not Available
  
141,362.00 kJ/mol
  
2
11th Energy Level
Not Available
  
159,076.00 kJ/mol
  
2
Electrochemical Equivalent
1.89 g/amp-hr
  
33
0.86 g/amp-hr
  
99+
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
  
Chemical Stability, Corrosion, Flammability, Ionization, Solubility
  
Electron Configuration
[Xe] 4f7 6s2
  
[Ne] 3s1
  
Crystal Structure
Body Centered Cubic (BCC)
  
Body Centered Cubic (BCC)
  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
  
BCC-Crystal-Structure-.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Weight
151.96 amu
  
99+
Atomic Volume
28.90 cm3/mol
  
8
23.70 cm3/mol
  
10
Adjacent Atomic Numbers
  
  
Valence Electron Potential
45.60 (-eV)
  
35
14.10 (-eV)
  
99+
Lattice Angles
π/2, π/2, π/2
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
5.26 g/cm3
  
99+
0.97 g/cm3
  
99+
Density When Liquid (at m.p.)
5.13 g/cm3
  
99+
0.93 g/cm3
  
99+
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Elasticity properties
  
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
Ductile
  
NA
  
Magnetic Characteristics
  
  
Magnetic Ordering
Paramagnetic
  
Paramagnetic
  
Electrical Properties
  
  
Electrical Property
Conductor
  
Conductor
  
Resistivity
47.70 nΩ·m
  
99+
Electrical Conductivity
0.01 106/cm Ω
  
99+
0.21 106/cm Ω
  
9
Electron Affinity
50.00 kJ/mol
  
21
52.80 kJ/mol
  
19
Specific Heat
0.18 J/(kg K)
  
33
1.23 J/(kg K)
  
3
Molar Heat Capacity
27.66 J/mol·K
  
16
28.23 J/mol·K
  
10
Thermal Conductivity
13.90 W/m·K
  
99+
142.00 W/m·K
  
11
Critical Temperature
Not Available
  
Thermal Expansion
35.00 µm/(m·K)
  
8
71.00 µm/(m·K)
  
4
Enthalpy
  
  
Enthalpy of Vaporization
143.50 kJ/mol
  
99+
89.04 kJ/mol
  
99+
Enthalpy of Fusion
9.21 kJ/mol
  
37
2.59 kJ/mol
  
99+
Enthalpy of Atomization
180.00 kJ/mol
  
99+
108.40 kJ/mol
  
99+
Standard Molar Entropy
77.80 J/mol.K
  
4
51.30 J/mol.K
  
28