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Bohrium Scandium Comparison

Bohrium
Scandium
Scandium Bohrium comparison


Periodic Table
Symbol
Bh  
Sc  
Group Number
7  
11
3  
15
Period Number
7  
4  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
54037148  
12
7440202  
99+
Space Group Name
-  
P63/mmc  
Space Group Number
276.00  
1
194.00  
7
Facts
Interesting Facts
  • Bohrium metal is also known as Unnilseptium (Uns) and Nielsbohrium (Ns).
  
  • Scandium is known as one of the rare earth elements.
  • Scandium metal found in rare minerals called Wolframite .
  
Sources
Found in Minerals, Mining, Synthetically Produced  
Found in Minerals, Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Lars Fredrik Nilson  
Discovery
In 1981  
In 1879  
Abundance
  
  
Abundance In Universe
0.00 %  
37
0.00 %  
16
Abundance In Sun
-  
0.00 %  
16
Abundance In Meteorites
0.00 %  
99+
0.00 %  
18
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
23
Abundance In Oceans
-  
0.00 %  
32
Abundance In Humans
-  
0.00 %  
24
Uses
Uses & Benefits
  • Currently known uses of Bohrium metal are limited to research purpose only.
  
  • Uses of Scandium are limited to research purpose only. However, it has very low density and higher melting point.
  • Its compounds like scandium iodide is used in mercury vapor lamps to produce very bright white light.
  
Industrial Uses
-  
Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
-  
Non Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.01 Blood/mg dm-3  
22
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
39
Physical
Melting Point
-  
1,539.00 °C  
24
Boiling Point
0.00 °C  
99+
2,832.00 °C  
36
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Silvery White  
Luster
Unknown Luster  
Lustrous  
Hardness
  
  
Mohs Hardness
7.00  
3
5.50  
7
Brinell Hardness
270.00 MPa  
99+
750.00 MPa  
13
Vickers Hardness
2,700.00 MPa  
4
1,200.00 MPa  
13
Speed of Sound
2,680.00 m/s  
99+
6,100.00 m/s  
5
Optical Properties
  
  
Refractive Index
1.50  
36
1.80  
21
Reflectivity
59.00 %  
24
93.00 %  
3
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Bh  
Sc  
Isotopes
  
  
Known Isotopes
5  
32
13  
26
Electronegativity
  
  
Pauling Electronegativity
2.00  
8
1.36  
30
Sanderson Electronegativity
1.30  
25
1.02  
40
Allred Rochow Electronegativity
1.30  
25
1.20  
28
Mulliken-Jaffe Electronegativity
1.30  
33
1.36  
31
Allen Electronegativity
2.00  
6
1.19  
99+
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
2.64  
25
Ionization Energies
  
  
1st Energy Level
742.90 kJ/mol  
23
633.10 kJ/mol  
99+
2nd Energy Level
1,688.50 kJ/mol  
31
1,235.00 kJ/mol  
99+
3rd Energy Level
2,566.50 kJ/mol  
99+
2,388.60 kJ/mol  
99+
4th Energy Level
3,598.90 kJ/mol  
99+
7,090.60 kJ/mol  
13
5th Energy Level
4,727.80 kJ/mol  
99+
8,843.00 kJ/mol  
7
6th Energy Level
5,991.70 kJ/mol  
99+
10,679.00 kJ/mol  
13
7th Energy level
7,226.80 kJ/mol  
34
13,310.00 kJ/mol  
8
8th Energy Level
7,100.00 kJ/mol  
33
15,250.00 kJ/mol  
11
9th Energy Level
5,800.00 kJ/mol  
99+
17,370.00 kJ/mol  
14
10th Energy Level
7,100.00 kJ/mol  
35
21,726.00 kJ/mol  
13
11th Energy Level
8,200.00 kJ/mol  
25
24,102.00 kJ/mol  
16
12th Energy Level
82,700.00 kJ/mol  
4
66,320.00 kJ/mol  
7
13th Energy Level
7,100.00 kJ/mol  
29
73,010.00 kJ/mol  
2
14th Energy Level
8,200.00 kJ/mol  
17
80,160.00 kJ/mol  
3
15th Energy Level
82,000.00 kJ/mol  
14
89,490.00 kJ/mol  
6
16th Energy Level
71,100.00 kJ/mol  
20
97,400.00 kJ/mol  
5
17th Energy Level
820.00 kJ/mol  
31
105,600.00 kJ/mol  
6
18th Energy Level
8,200.00 kJ/mol  
20
117,000.00 kJ/mol  
7
19th Energy Level
820.80 kJ/mol  
28
124,270.00 kJ/mol  
8
20th Energy Level
820.00 kJ/mol  
21
633.00 kJ/mol  
99+
21st Energy Level
8,200.00 kJ/mol  
11
633.10 kJ/mol  
99+
22nd Energy Level
820.00 kJ/mol  
16
633.00 kJ/mol  
35
23rd Energy Level
8,200.00 kJ/mol  
8
633.10 kJ/mol  
99+
24th Energy Level
820.00 kJ/mol  
12
633.10 kJ/mol  
37
25th Energy Level
820.00 kJ/mol  
10
633.00 kJ/mol  
39
26th Energy Level
820.00 kJ/mol  
10
633.10 kJ/mol  
38
27th Energy Level
820.00 kJ/mol  
9
633.10 kJ/mol  
40
28th Energy Level
820.00 kJ/mol  
15
633.10 kJ/mol  
99+
29th Energy Level
820.00 kJ/mol  
14
633.10 kJ/mol  
99+
30th Energy Level
820.00 kJ/mol  
10
633.00 kJ/mol  
99+
Electrochemical Equivalent
3.00 g/amp-hr  
21
0.56 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
3.50 eV  
99+
Other Chemical Properties
Ionization, Radioactive Isotopes  
Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
107  
11
21  
99+
Electron Configuration
[Rn] 5f14 6d5 7s2  
[Ar] 3d1 4s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
HCP-Crystal-Structure-of-Scandium.jpg#100  
Atom
  
  
Number of Protons
107  
11
21  
99+
Number of Neutrons
155  
9
24  
99+
Number of Electrons
107  
11
21  
99+
Radius of an Atom
  
  
Atomic Radius
128.00 pm  
99+
162.00 pm  
28
Covalent Radius
141.00 pm  
99+
170.00 pm  
27
Van der Waals Radius
0.00 pm  
99+
211.00 pm  
32
Atomic Weight
270.00 amu  
8
44.96 amu  
99+
Atomic Volume
23.70 cm3/mol  
14
15.00 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Seaborgium
  
Calcium
  
Next Element
Hassium
  
Titanium
  
Valence Electron Potential
27.20 (-eV)  
99+
58.00 (-eV)  
25
Lattice Constant
-  
330.90 pm  
99+
Lattice Angles
-  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.57  
99+
1.59  
24
Mechanical
Density
  
  
Density At Room Temperature
37.10 g/cm3  
3
2.99 g/cm3  
99+
Density When Liquid (at m.p.)
37.10 g/cm3  
3
2.80 g/cm3  
99+
Tensile Strength
152.00 MPa  
24
150.00 MPa  
25
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
24
Vapor Pressure at 2000 K
0.00 (Pa)  
37
91.30 (Pa)  
3
Elasticity properties
  
  
Shear Modulus
28.00 GPa  
32
29.10 GPa  
28
Bulk Modulus
37.00 GPa  
99+
56.60 GPa  
22
Young's Modulus
0.00 GPa  
99+
74.40 GPa  
28
Poisson Ratio
0.35  
9
0.28  
18
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
37.00  
5
2.99  
99+
Magnetic Ordering
-  
Paramagnetic  
Permeability
0.00 H/m  
11
0.00 H/m  
8
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
6.50 nΩ·m  
99+
562.00 nΩ·m  
10
Electrical Conductivity
0.00 106/cm Ω  
99+
0.02 106/cm Ω  
99+
Electron Affinity
-  
18.10 kJ/mol  
39
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.60 J/(kg K)  
8
Molar Heat Capacity
37.10 J/mol·K  
2
25.52 J/mol·K  
99+
Thermal Conductivity
37.00 W/m·K  
36
15.80 W/m·K  
99+
Critical Temperature
1,323.00 K  
99+
1,814.00 K  
28
Thermal Expansion
14.30 µm/(m·K)  
28
10.20 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
270.50 kJ/mol  
99+
314.20 kJ/mol  
99+
Enthalpy of Fusion
-  
14.10 kJ/mol  
29
Enthalpy of Atomization
-  
343.00 kJ/mol  
38
Standard Molar Entropy
57.00 J/mol.K  
30
34.60 J/mol.K  
99+
Summary >>
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