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Strontium vs Seaborgium

Strontium
Seaborgium
Seaborgium vs Strontium


Periodic Table
Symbol
Sr  
Sg  
Group Number
2  
16
6  
12
Period Number
5  
7  
Block
s block  
d block  
Element Family
Alkaline Earth  
Transition Metal  
CAS Number
7440246  
99+
54038812  
9
Space Group Name
Fm_ 3m  
-  
Space Group Number
225.00  
3
166.00  
9
Facts
Interesting Facts
  • Strontium element is softer than Calcium.
  • Silvery Strontium turns yellow, if exposed to air.
  
  • Seaborgium most stable isotope is Sg and it has 2.1 min of half- life.
  • And other isotopes of Seaborgium have half-lives as short as 3 ms.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Synthetically Produced  
History
  
  
Who Discovered
William Cruickshank  
Lawrence Berkeley National Laboratory  
Discovery
In 1787  
In 1974  
Abundance
  
  
Abundance In Universe
0.00 %  
15
0.00 %  
40
Abundance In Sun
0.00 %  
15
-  
Abundance In Meteorites
0.00 %  
15
-  
Abundance In Earth's Crust
0.04 %  
10
-  
Abundance In Oceans
0.00 %  
4
-  
Abundance In Humans
0.00 %  
8
-  
Uses
Uses & Benefits
  • Strontium metal is used to producing ferrite magnets as well as refining zinc.
  • By-product of nuclear reactors called Strontium-90 is a radioactive isotope; it is absorbed by tissues and destroys bone marrow and cancer growth.
  
  • Currently known uses of Seaborgium metal are limited to research purpose only.
  
Industrial Uses
Ammunition Industry, Chemical Industry  
-  
Medical Uses
-  
-  
Other Uses
Alloys  
Research Purposes  
Biological Properties
  
  
Toxicity
Non Toxic  
-  
Present in Human Body
Yes  
No  
In Blood
0.03 Blood/mg dm-3  
19
0.00 Blood/mg dm-3  
27
In Bone
140.00 p.p.m.  
7
0.00 p.p.m.  
99+
Physical
Melting Point
769.00 °C  
99+
-  
Boiling Point
1,384.00 °C  
99+
0.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
-  
Luster
Metallic  
Unknown Luster  
Hardness
  
  
Mohs Hardness
1.50  
19
6.00  
6
Brinell Hardness
110.00 MPa  
99+
400.00 MPa  
34
Vickers Hardness
15.00 MPa  
99+
520.00 MPa  
33
Speed of Sound
4,170.00 m/s  
23
3,200.00 m/s  
35
Optical Properties
  
  
Refractive Index
1.43  
39
1.30  
99+
Reflectivity
65.00 %  
18
68.00 %  
15
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Sr  
Sg  
Isotopes
  
  
Known Isotopes
27  
12
9  
29
Electronegativity
  
  
Pauling Electronegativity
0.95  
99+
0.00  
99+
Sanderson Electronegativity
0.72  
99+
1.90  
13
Allred Rochow Electronegativity
0.99  
38
1.30  
25
Mulliken-Jaffe Electronegativity
1.00  
99+
1.30  
33
Allen Electronegativity
0.96  
99+
1.90  
8
Electropositivity
  
  
Pauling Electropositivity
3.05  
7
2.20  
39
Ionization Energies
  
  
1st Energy Level
549.50 kJ/mol  
99+
757.40 kJ/mol  
21
2nd Energy Level
1,064.20 kJ/mol  
99+
1,732.90 kJ/mol  
29
3rd Energy Level
4,138.00 kJ/mol  
10
2,483.50 kJ/mol  
99+
4th Energy Level
5,500.00 kJ/mol  
22
3,415.60 kJ/mol  
99+
5th Energy Level
6,910.00 kJ/mol  
30
4,561.80 kJ/mol  
99+
6th Energy Level
8,760.00 kJ/mol  
26
5,715.80 kJ/mol  
99+
7th Energy level
10,230.00 kJ/mol  
19
5,700.00 kJ/mol  
99+
8th Energy Level
11,800.00 kJ/mol  
19
5,700.00 kJ/mol  
99+
9th Energy Level
15,600.00 kJ/mol  
17
5,710.00 kJ/mol  
99+
10th Energy Level
17,100.00 kJ/mol  
19
6,270.00 kJ/mol  
99+
11th Energy Level
31,270.00 kJ/mol  
6
6,600.00 kJ/mol  
39
12th Energy Level
5,490.00 kJ/mol  
99+
971.00 kJ/mol  
99+
13th Energy Level
5,490.00 kJ/mol  
99+
5,700.00 kJ/mol  
99+
14th Energy Level
5,490.00 kJ/mol  
99+
5,700.00 kJ/mol  
99+
15th Energy Level
54,900.00 kJ/mol  
99+
54,000.00 kJ/mol  
99+
16th Energy Level
54,900.00 kJ/mol  
99+
64,000.00 kJ/mol  
27
17th Energy Level
549.50 kJ/mol  
99+
579.80 kJ/mol  
99+
18th Energy Level
5,490.00 kJ/mol  
99+
3,300.00 kJ/mol  
99+
19th Energy Level
549.50 kJ/mol  
99+
579.80 kJ/mol  
99+
20th Energy Level
549.00 kJ/mol  
99+
579.00 kJ/mol  
99+
21st Energy Level
549.50 kJ/mol  
99+
6,270.00 kJ/mol  
14
22nd Energy Level
549.00 kJ/mol  
99+
573.00 kJ/mol  
99+
23rd Energy Level
549.50 kJ/mol  
99+
5,790.00 kJ/mol  
22
24th Energy Level
549.50 kJ/mol  
99+
971.00 kJ/mol  
4
25th Energy Level
549.00 kJ/mol  
99+
0.00 kJ/mol  
99+
26th Energy Level
549.50 kJ/mol  
99+
579.10 kJ/mol  
99+
27th Energy Level
549.50 kJ/mol  
99+
870.00 kJ/mol  
7
28th Energy Level
549.50 kJ/mol  
99+
870.00 kJ/mol  
10
29th Energy Level
549.50 kJ/mol  
99+
761.90 kJ/mol  
21
30th Energy Level
549.50 kJ/mol  
99+
0.00 kJ/mol  
99+
Electrochemical Equivalent
1.64 g/amp-hr  
99+
3.20 g/amp-hr  
14
Electron Work Function
2.59 eV  
99+
6.00 eV  
1
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
-  
Atomic
Atomic Number
38  
99+
106  
12
Electron Configuration
[Kr] 5s2  
[Rn] 5f14 6d2 7s2  
Crystal Structure
Face Centered Cubic (FCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Strontium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
38  
99+
106  
12
Number of Neutrons
50  
99+
157  
8
Number of Electrons
38  
99+
106  
12
Radius of an Atom
  
  
Atomic Radius
215.00 pm  
6
132.00 pm  
99+
Covalent Radius
195.00 pm  
15
143.00 pm  
99+
Van der Waals Radius
249.00 pm  
11
230.00 pm  
24
Atomic Weight
87.62 amu  
99+
269.00 amu  
9
Atomic Volume
33.70 cm3/mol  
9
35.00 cm3/mol  
8
Adjacent Atomic Numbers
  
  
Previous Element
Rubidium
  
Dubnium
  
Next Element
Yttrium
  
Bohrium
  
Valence Electron Potential
25.70 (-eV)  
99+
6.10 (-eV)  
99+
Lattice Constant
608.49 pm  
6
-  
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.57  
40
1.36  
99+
Mechanical
Density
  
  
Density At Room Temperature
2.64 g/cm3  
99+
35.00 g/cm3  
4
Density When Liquid (at m.p.)
2.38 g/cm3  
99+
35.00 g/cm3  
4
Tensile Strength
170.00 MPa  
21
30.00 MPa  
99+
Viscosity
0.00  
2
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
121.00 (Pa)  
1
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
38
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
6.03 GPa  
99+
30.00 GPa  
27
Bulk Modulus
11.00 GPa  
99+
0.00 GPa  
99+
Young's Modulus
15.70 GPa  
99+
12.60 GPa  
99+
Poisson Ratio
0.28  
17
0.25  
24
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
2.64  
99+
35.00  
6
Magnetic Ordering
Paramagnetic  
-  
Permeability
0.00 H/m  
17
0.00 H/m  
7
Susceptibility
0.00  
35
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
132.00 nΩ·m  
24
0.38 nΩ·m  
99+
Electrical Conductivity
0.08 106/cm Ω  
31
0.00 106/cm Ω  
99+
Electron Affinity
5.03 kJ/mol  
99+
50.00 kJ/mol  
26
Thermal
Specific Heat
0.30 J/(kg K)  
18
0.27 J/(kg K)  
19
Molar Heat Capacity
26.40 J/mol·K  
36
35.00 J/mol·K  
5
Thermal Conductivity
35.40 W/m·K  
38
0.14 W/m·K  
99+
Critical Temperature
1,050.00 K  
99+
1,200.00 K  
99+
Thermal Expansion
22.50 µm/(m·K)  
19
11.00 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
150.00 kJ/mol  
99+
585.00 kJ/mol  
10
Enthalpy of Fusion
9.16 kJ/mol  
99+
-  
Enthalpy of Atomization
163.20 kJ/mol  
99+
650.00 kJ/mol  
8
Standard Molar Entropy
55.00 J/mol.K  
34
42.70 J/mol.K  
99+
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