Symbol
Be
  
Ru
  
Period Number
2
  
5
  
Block
s block
  
d block
  
Element Family
Alkaline Earth
  
Transition Metal
  
Space Group Name
P63/mmc
  
P63/mmc
  
Interesting Facts
- Beryllium is best anti corrosion metal.
- Beryllium is the lightest metal and still it is stronger than steel.
- It also finds various applications in Nuclear reactors as a reflector.
  
- Ruthenium element has been extracted from used nuclear fuel.
- Ruthenium metal also produces as a by-product of the Nickel mining.
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of metals, Ores of Minerals
  
By-product of Nickel Refining, Found in Minerals, Mining
  
History
  
  
Who Discovered
Louis Nicolas Vauquelin
  
Karl Ernst Claus
  
Discovery
In 1797
  
In 1844
  
Abundance
  
  
Abundance In Sun
~0.00000001 %
  
29
~0.0000005 %
  
22
Abundance In Earth's Crust
Abundance In Humans
Not Available
  
Uses & Benefits
- Its alloys with copper or nickel are used in manufacturing Gyroscopes, springs, electrical contact and non sparking tools.
- Beryllium Alloys are used as a material for aircraft, missiles, spacecraft and satellite.
  
- It is used for producing chip resistors and contact.
- Ruthenium oxide is used to coat the anodes cells for chlorine production in chemical industry. It also works as catalysts for ammonia and acetic acid reaction.
  
Industrial Uses
Aerospace Industry, Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry
  
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
  
Medical Uses
NA
  
Medical Research
  
Other Uses
Alloys
  
Alloys
  
Biological Properties
  
  
Toxicity
Toxic
  
Low Toxic
  
Present in Human Body
Yes
  
No
  
In Blood
0.00 Blood/mg dm-3
  
32
Not Available
  
In Bone
0.00 p.p.m.
  
32
Not Available
  
Melting Point
1,278.00 °C
  
36
Boiling Point
2,970.00 °C
  
32
3,900.00 °C
  
14
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
White Gray
  
Silvery White
  
Luster
Metallic
  
Metallic
  
Hardness
  
  
Brinell Hardness
2,160.00 MPa
  
3
Vickers Hardness
1,670.00 MPa
  
4
Not Available
  
Speed of Sound
12,890.00 m/s
  
2
5,970.00 m/s
  
4
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
Be
  
Ru
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
899.50 kJ/mol
  
7
710.20 kJ/mol
  
32
2nd Energy Level
1,757.10 kJ/mol
  
23
710.22 kJ/mol
  
99+
3rd Energy Level
14,848.70 kJ/mol
  
2
2,747.00 kJ/mol
  
37
4th Energy Level
21,006.60 kJ/mol
  
2
Not Available
  
Electrochemical Equivalent
0.17 g/amp-hr
  
99+
1.26 g/amp-hr
  
99+
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes
  
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
  
Electron Configuration
[He] 2s2
  
[Kr] 4d7 5s1
  
Crystal Structure
Hexagonal Close Packed (HCP)
  
Hexagonal Close Packed (HCP)
  
Crystal Lattice
HCP-Crystal-Structure-of-Beryllium.jpg#100
  
rystal-Structure-of-Ruthenium.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Weight
101.07 amu
  
99+
Atomic Volume
5.00 cm3/mol
  
99+
8.30 cm3/mol
  
99+
Adjacent Atomic Numbers
  
  
Valence Electron Potential
82.00 (-eV)
  
15
64.00 (-eV)
  
22
Lattice Angles
π/2, π/2, π/2
  
π/2, π/2, 2 π/3
  
Density
  
  
Density At Room Temperature
1.85 g/cm3
  
99+
12.45 g/cm3
  
27
Density When Liquid (at m.p.)
1.69 g/cm3
  
99+
10.65 g/cm3
  
16
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Vapor Pressure at 2000 K
Not Available
  
Elasticity properties
  
  
Other Mechanical Properties
NA
  
Ductile, Malleable
  
Magnetic Characteristics
  
  
Magnetic Ordering
Diamagnetic
  
Paramagnetic
  
Electrical Properties
  
  
Electrical Property
Semiconductor
  
Conductor
  
Resistivity
36.00 nΩ·m
  
99+
Electrical Conductivity
0.31 106/cm Ω
  
5
0.14 106/cm Ω
  
16
Electron Affinity
0.00 kJ/mol
  
40
101.30 kJ/mol
  
10
Specific Heat
1.82 J/(kg K)
  
2
0.24 J/(kg K)
  
24
Molar Heat Capacity
16.44 J/mol·K
  
99+
24.06 J/mol·K
  
99+
Thermal Conductivity
200.00 W/m·K
  
6
117.00 W/m·K
  
13
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
11.30 µm/(m·K)
  
34
6.40 µm/(m·K)
  
99+
Enthalpy
  
  
Enthalpy of Vaporization
294.70 kJ/mol
  
30
567.80 kJ/mol
  
10
Enthalpy of Fusion
11.72 kJ/mol
  
30
25.50 kJ/mol
  
7
Enthalpy of Atomization
326.40 kJ/mol
  
30
603.00 kJ/mol
  
9
Standard Molar Entropy
9.50 J/mol.K
  
99+
28.50 J/mol.K
  
99+