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Roentgenium vs Beryllium

Roentgenium
Beryllium
Beryllium vs Roentgenium


Periodic Table
Symbol
Rg  
Be  
Group Number
11  
7
2  
16
Period Number
7  
2  
Block
d block  
s block  
Element Family
-  
Alkaline Earth  
CAS Number
54386242  
1
7440417  
99+
Space Group Name
-  
P63/mmc  
Space Group Number
194.00  
7
194.00  
7
Facts
Interesting Facts
Roentgenium is a highly unstable synthetic element.  
  • 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.
  
Sources
Synthetically Produced  
Earth's crust, Found in Minerals, Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Louis Nicolas Vauquelin  
Discovery
In 1994  
In 1797  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
24
Abundance In Sun
-  
0.00 %  
29
Abundance In Meteorites
-  
0.00 %  
99+
Abundance In Earth's Crust
-  
0.00 %  
35
Abundance In Oceans
-  
0.00 %  
39
Abundance In Humans
-  
0.00 %  
22
Uses
Uses & Benefits
  • Currently known uses of Roentgenium metal are limited to research purpose only.
  
  • 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.
  
Industrial Uses
-  
Aerospace Industry, Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
-  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
35
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
37
Physical
Melting Point
-  
1,278.00 °C  
36
Boiling Point
2,800.00 °C  
38
2,970.00 °C  
33
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
White Gray  
Luster
Unknown Luster  
Metallic  
Hardness
  
  
Mohs Hardness
-  
5.50  
7
Brinell Hardness
700.00 MPa  
17
590.00 MPa  
25
Vickers Hardness
450.00 MPa  
38
1,670.00 MPa  
9
Speed of Sound
3,430.00 m/s  
32
12,890.00 m/s  
2
Optical Properties
  
  
Refractive Index
1.30  
99+
1.56  
34
Reflectivity
64.00 %  
19
65.00 %  
18
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Rg  
Be  
Isotopes
  
  
Known Isotopes
1  
34
9  
29
Electronegativity
  
  
Pauling Electronegativity
0.00  
99+
1.57  
25
Sanderson Electronegativity
1.90  
13
1.81  
15
Allred Rochow Electronegativity
1.30  
25
1.47  
15
Mulliken-Jaffe Electronegativity
0.90  
99+
1.54  
24
Allen Electronegativity
0.80  
99+
1.58  
26
Electropositivity
  
  
Pauling Electropositivity
2.20  
39
2.43  
30
Ionization Energies
  
  
1st Energy Level
1,022.70 kJ/mol  
3
899.50 kJ/mol  
7
2nd Energy Level
2,074.40 kJ/mol  
10
1,757.10 kJ/mol  
24
3rd Energy Level
3,077.90 kJ/mol  
24
14,848.70 kJ/mol  
2
4th Energy Level
4,052.40 kJ/mol  
99+
21,006.60 kJ/mol  
2
5th Energy Level
5,306.70 kJ/mol  
99+
2,970.00 kJ/mol  
99+
6th Energy Level
11,100.00 kJ/mol  
10
1,470.00 kJ/mol  
99+
7th Energy level
5,800.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
8th Energy Level
5,800.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
9th Energy Level
5,650.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
10th Energy Level
5,800.00 kJ/mol  
99+
2,970.00 kJ/mol  
99+
11th Energy Level
8,300.00 kJ/mol  
24
2,970.00 kJ/mol  
99+
12th Energy Level
8,300.00 kJ/mol  
99+
29,700.00 kJ/mol  
35
13th Energy Level
8,700.00 kJ/mol  
16
2,970.00 kJ/mol  
99+
14th Energy Level
8,300.00 kJ/mol  
16
2,970.00 kJ/mol  
99+
15th Energy Level
87,000.00 kJ/mol  
9
89,900.00 kJ/mol  
5
16th Energy Level
83,000.00 kJ/mol  
11
89,900.00 kJ/mol  
8
17th Energy Level
830.80 kJ/mol  
30
2,970.00 kJ/mol  
14
18th Energy Level
8,300.00 kJ/mol  
19
8,995.00 kJ/mol  
13
19th Energy Level
580.00 kJ/mol  
99+
899.50 kJ/mol  
22
20th Energy Level
580.00 kJ/mol  
99+
899.00 kJ/mol  
12
21st Energy Level
5,800.00 kJ/mol  
21
2,970.00 kJ/mol  
26
22nd Energy Level
580.00 kJ/mol  
99+
899.00 kJ/mol  
10
23rd Energy Level
5,800.00 kJ/mol  
21
2,970.00 kJ/mol  
31
24th Energy Level
538.70 kJ/mol  
99+
297.30 kJ/mol  
99+
25th Energy Level
0.00 kJ/mol  
99+
2,970.00 kJ/mol  
2
26th Energy Level
580.00 kJ/mol  
99+
2,970.00 kJ/mol  
2
27th Energy Level
580.00 kJ/mol  
99+
297.30 kJ/mol  
99+
28th Energy Level
880.00 kJ/mol  
8
297.30 kJ/mol  
99+
29th Energy Level
580.00 kJ/mol  
99+
2,970.00 kJ/mol  
2
30th Energy Level
0.00 kJ/mol  
99+
2,970.00 kJ/mol  
2
Electrochemical Equivalent
3.10 g/amp-hr  
18
0.17 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
4.98 eV  
10
Other Chemical Properties
-  
Corrosion, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
111  
7
4  
99+
Electron Configuration
[Rn] 5f14 6d9 7s2  
[He] 2s2  
Crystal Structure
Body Centered Cubic (BCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
HCP-Crystal-Structure-of-Beryllium.jpg#100  
Atom
  
  
Number of Protons
111  
7
4  
99+
Number of Neutrons
161  
4
5  
99+
Number of Electrons
111  
7
4  
99+
Radius of an Atom
  
  
Atomic Radius
200.00 pm  
7
112.00 pm  
99+
Covalent Radius
126.00 pm  
99+
96.00 pm  
99+
Van der Waals Radius
280.00 pm  
6
153.00 pm  
99+
Atomic Weight
281.00 amu  
6
9.01 amu  
99+
Atomic Volume
28.70 cm3/mol  
12
5.00 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Darmstadtium
  
Lithium
  
Next Element
Copernicium
  
Sodium
  
Valence Electron Potential
11.90 (-eV)  
99+
82.00 (-eV)  
15
Lattice Constant
0.00 pm  
99+
228.58 pm  
99+
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.90  
1
1.57  
99+
Mechanical
Density
  
  
Density At Room Temperature
28.70 g/cm3  
6
1.85 g/cm3  
99+
Density When Liquid (at m.p.)
28.70 g/cm3  
7
1.69 g/cm3  
99+
Tensile Strength
65.00 MPa  
33
287.00 MPa  
16
Viscosity
0.00  
25
0.00  
17
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
20
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
24
Elasticity properties
  
  
Shear Modulus
26.00 GPa  
36
132.00 GPa  
7
Bulk Modulus
0.00 GPa  
99+
130.00 GPa  
13
Young's Modulus
12.70 GPa  
99+
287.00 GPa  
7
Poisson Ratio
0.30  
14
0.03  
36
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
28.70  
8
1.85  
99+
Magnetic Ordering
-  
Diamagnetic  
Permeability
0.00 H/m  
12
0.00 H/m  
12
Susceptibility
0.00  
24
0.00  
11
Electrical Properties
  
  
Electrical Property
-  
Semiconductor  
Resistivity
0.20 nΩ·m  
99+
36.00 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.31 106/cm Ω  
5
Electron Affinity
50.00 kJ/mol  
26
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.13 J/(kg K)  
40
1.82 J/(kg K)  
2
Molar Heat Capacity
23.70 J/mol·K  
99+
16.44 J/mol·K  
99+
Thermal Conductivity
0.10 W/m·K  
99+
200.00 W/m·K  
6
Critical Temperature
1,100.00 K  
99+
1,551.00 K  
39
Thermal Expansion
12.60 µm/(m·K)  
40
11.30 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
580.00 kJ/mol  
12
294.70 kJ/mol  
99+
Enthalpy of Fusion
-  
11.72 kJ/mol  
36
Enthalpy of Atomization
580.00 kJ/mol  
14
326.40 kJ/mol  
40
Standard Molar Entropy
57.00 J/mol.K  
30
9.50 J/mol.K  
99+
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