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Strontium vs Hassium

Strontium
Hassium
Hassium vs Strontium


Periodic Table
Symbol
Sr  
Hs  
Group Number
2  
16
8  
10
Period Number
5  
7  
Block
s block  
d block  
Element Family
Alkaline Earth  
Transition Metal  
CAS Number
7440246  
99+
54037579  
11
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.
  
  • Hassium metals rate of decay is very high.
  • Hassium metals 1st sample was synthesized through a nuclear reaction.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Synthetically Produced  
History
  
  
Who Discovered
William Cruickshank  
Gesellschaft für Schwerionenforschung  
Discovery
In 1787  
In 1984  
Abundance
  
  
Abundance In Universe
0.00 %  
15
0.00 %  
40
Abundance In Sun
0.00 %  
15
-  
Abundance In Meteorites
0.00 %  
15
0.00 %  
99+
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 Hassium 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  
40
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  
Silver  
Luster
Metallic  
-  
Hardness
  
  
Mohs Hardness
1.50  
19
4.50  
10
Brinell Hardness
110.00 MPa  
99+
230.00 MPa  
99+
Vickers Hardness
15.00 MPa  
99+
2,450.00 MPa  
5
Speed of Sound
4,170.00 m/s  
23
2,760.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.43  
39
1.30  
99+
Reflectivity
65.00 %  
18
69.00 %  
14
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Sr  
Hs  
Isotopes
  
  
Known Isotopes
27  
12
7  
31
Electronegativity
  
  
Pauling Electronegativity
0.95  
99+
2.20  
5
Sanderson Electronegativity
0.72  
99+
1.30  
25
Allred Rochow Electronegativity
0.99  
38
1.30  
25
Mulliken-Jaffe Electronegativity
1.00  
99+
1.30  
33
Allen Electronegativity
0.96  
99+
1.30  
40
Electropositivity
  
  
Pauling Electropositivity
3.05  
7
2.00  
99+
Ionization Energies
  
  
1st Energy Level
549.50 kJ/mol  
99+
733.30 kJ/mol  
26
2nd Energy Level
1,064.20 kJ/mol  
99+
1,756.00 kJ/mol  
25
3rd Energy Level
4,138.00 kJ/mol  
10
2,827.00 kJ/mol  
37
4th Energy Level
5,500.00 kJ/mol  
22
3,637.50 kJ/mol  
99+
5th Energy Level
6,910.00 kJ/mol  
30
4,940.00 kJ/mol  
99+
6th Energy Level
8,760.00 kJ/mol  
26
6,175.10 kJ/mol  
99+
7th Energy level
10,230.00 kJ/mol  
19
7,535.50 kJ/mol  
32
8th Energy Level
11,800.00 kJ/mol  
19
8,857.40 kJ/mol  
21
9th Energy Level
15,600.00 kJ/mol  
17
5,400.00 kJ/mol  
99+
10th Energy Level
17,100.00 kJ/mol  
19
6,100.00 kJ/mol  
99+
11th Energy Level
31,270.00 kJ/mol  
6
6,100.00 kJ/mol  
99+
12th Energy Level
5,490.00 kJ/mol  
99+
3,500.00 kJ/mol  
99+
13th Energy Level
5,490.00 kJ/mol  
99+
4,200.00 kJ/mol  
99+
14th Energy Level
5,490.00 kJ/mol  
99+
1,124.00 kJ/mol  
99+
15th Energy Level
54,900.00 kJ/mol  
99+
68,200.00 kJ/mol  
31
16th Energy Level
54,900.00 kJ/mol  
99+
32,800.00 kJ/mol  
99+
17th Energy Level
549.50 kJ/mol  
99+
1,089.00 kJ/mol  
22
18th Energy Level
5,490.00 kJ/mol  
99+
3,300.00 kJ/mol  
99+
19th Energy Level
549.50 kJ/mol  
99+
1,086.50 kJ/mol  
19
20th Energy Level
549.00 kJ/mol  
99+
880.00 kJ/mol  
14
21st Energy Level
549.50 kJ/mol  
99+
1,086.00 kJ/mol  
30
22nd Energy Level
549.00 kJ/mol  
99+
350.00 kJ/mol  
99+
23rd Energy Level
549.50 kJ/mol  
99+
1,120.00 kJ/mol  
34
24th Energy Level
549.50 kJ/mol  
99+
540.90 kJ/mol  
99+
25th Energy Level
549.00 kJ/mol  
99+
610.00 kJ/mol  
99+
26th Energy Level
549.50 kJ/mol  
99+
587.40 kJ/mol  
99+
27th Energy Level
549.50 kJ/mol  
99+
880.00 kJ/mol  
5
28th Energy Level
549.50 kJ/mol  
99+
840.00 kJ/mol  
14
29th Energy Level
549.50 kJ/mol  
99+
867.80 kJ/mol  
11
30th Energy Level
549.50 kJ/mol  
99+
0.00 kJ/mol  
99+
Electrochemical Equivalent
1.64 g/amp-hr  
99+
3.00 g/amp-hr  
21
Electron Work Function
2.59 eV  
99+
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
38  
99+
108  
10
Electron Configuration
[Kr] 5s2  
[Rn] 5f14 6d6 7s2  
Crystal Structure
Face Centered Cubic (FCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
FCC-Crystal-Structure-of-Strontium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
38  
99+
108  
10
Number of Neutrons
50  
99+
158  
7
Number of Electrons
38  
99+
108  
10
Radius of an Atom
  
  
Atomic Radius
215.00 pm  
6
126.00 pm  
99+
Covalent Radius
195.00 pm  
15
134.00 pm  
99+
Van der Waals Radius
249.00 pm  
11
0.00 pm  
99+
Atomic Weight
87.62 amu  
99+
269.00 amu  
9
Atomic Volume
33.70 cm3/mol  
9
22.70 cm3/mol  
18
Adjacent Atomic Numbers
  
  
Previous Element
Rubidium
  
Bohrium
  
Next Element
Yttrium
  
Meitnerium
  
Valence Electron Potential
25.70 (-eV)  
99+
0.00 (-eV)  
99+
Lattice Constant
608.49 pm  
6
-  
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.57  
40
1.31  
99+
Mechanical
Density
  
  
Density At Room Temperature
2.64 g/cm3  
99+
40.70 g/cm3  
1
Density When Liquid (at m.p.)
2.38 g/cm3  
99+
41.00 g/cm3  
1
Tensile Strength
170.00 MPa  
21
80.00 MPa  
29
Viscosity
0.00  
2
0.00  
27
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)  
30
Elasticity properties
  
  
Shear Modulus
6.03 GPa  
99+
40.00 GPa  
19
Bulk Modulus
11.00 GPa  
99+
40.00 GPa  
38
Young's Modulus
15.70 GPa  
99+
40.00 GPa  
99+
Poisson Ratio
0.28  
17
0.34  
10
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
2.64  
99+
41.00  
2
Magnetic Ordering
Paramagnetic  
-  
Permeability
0.00 H/m  
17
0.00 H/m  
8
Susceptibility
0.00  
35
0.00  
25
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
132.00 nΩ·m  
24
41.00 nΩ·m  
99+
Electrical Conductivity
0.08 106/cm Ω  
31
0.00 106/cm Ω  
99+
Electron Affinity
5.03 kJ/mol  
99+
63.20 kJ/mol  
19
Thermal
Specific Heat
0.30 J/(kg K)  
18
0.13 J/(kg K)  
99+
Molar Heat Capacity
26.40 J/mol·K  
36
25.92 J/mol·K  
99+
Thermal Conductivity
35.40 W/m·K  
38
0.00 W/m·K  
99+
Critical Temperature
1,050.00 K  
99+
1,323.00 K  
99+
Thermal Expansion
22.50 µm/(m·K)  
19
21.20 µm/(m·K)  
23
Enthalpy
  
  
Enthalpy of Vaporization
150.00 kJ/mol  
99+
126.00 kJ/mol  
99+
Enthalpy of Fusion
9.16 kJ/mol  
99+
-  
Enthalpy of Atomization
163.20 kJ/mol  
99+
-  
Standard Molar Entropy
55.00 J/mol.K  
34
57.20 J/mol.K  
29
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