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Uranium vs Strontium

Uranium
Strontium
Strontium vs Uranium


Periodic Table
Symbol
U   
Sr   
Group Number
0   
18
2   
16
Period Number
7   
5   
Block
f block   
s block   
Element Family
Actinide   
Alkaline Earth   
CAS Number
7440611   
28
7440246   
99+
Space Group Name
Cmcm   
Fm_ 3m   
Space Group Number
63.00   
10
225.00   
2
Facts
Interesting Facts
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
  • Strontium element is softer than Calcium.
  • Silvery Strontium turns yellow, if exposed to air.
  
Sources
Earth's crust, Mining, Ores of Minerals   
Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Not Available   
William Cruickshank   
Discovery
In 1789   
In 1787   
Abundance
  
  
Abundance In Universe
2 * 10-8 %   
29
4 * 10-6 %   
14
Abundance In Sun
~0.0000001 %   
26
~0.000005 %   
15
Abundance In Meteorites
0.00 %   
99+
0.00 %   
15
Abundance In Earth's Crust
0.00 %   
36
0.04 %   
10
Abundance In Oceans
0.00 %   
11
0.00 %   
4
Abundance In Humans
Not Available   
0.00 %   
7
Uses
Uses & Benefits
  • The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
  • Synthetic elements like transuranium are made from Uranium metal.
  
  • 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.
  
Industrial Uses
Ammunition Industry, Chemical Industry   
Ammunition Industry, Chemical Industry   
Medical Uses
NA   
NA   
Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues   
Alloys   
Biological Properties
  
  
Toxicity
Toxic   
Non Toxic   
Present in Human Body
No   
Yes   
In Blood
Not Available   
0.03 Blood/mg dm-3   
19
In Bone
Not Available   
140.00 p.p.m.   
7
Physical Properties
Melting Point
1,132.00 °C   
39
769.00 °C   
99+
Boiling Point
3,818.00 °C   
16
1,384.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery Gray   
Silvery White   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
6.00   
6
1.50   
18
Brinell Hardness
2,350.00 MPa   
2
Not Available   
Vickers Hardness
1,960.00 MPa   
2
Not Available   
Speed of Sound
3,155.00 m/s   
25
Not Available   
Optical Properties
  
  
Allotropes
No   
No   
α Allotropes
Not Available   
Not Available   
β Allotropes
Not Available   
Not Available   
γ Allotropes
Not Available   
Not Available   
Chemical Properties
Chemical Formula
U   
Sr   
Isotopes
  
  
Known Isotopes
25   
14
27   
12
Electronegativity
  
  
Pauling Electronegativity
1.38   
28
0.95   
99+
Sanderson Electronegativity
Not Available   
0.72   
27
Allred Rochow Electronegativity
1.22   
26
0.99   
37
Mulliken-Jaffe Electronegativity
Not Available   
1.00   
18
Allen Electronegativity
Not Available   
0.96   
40
Electropositivity
  
  
Pauling Electropositivity
2.62   
26
3.05   
7
Ionization Energies
  
  
1st Energy Level
597.60 kJ/mol   
99+
549.50 kJ/mol   
99+
2nd Energy Level
1,420.00 kJ/mol   
99+
1,064.20 kJ/mol   
99+
3rd Energy Level
1,900.00 kJ/mol   
99+
4,138.00 kJ/mol   
10
4th Energy Level
3,145.00 kJ/mol   
99+
5,500.00 kJ/mol   
13
5th Energy Level
Not Available   
6,910.00 kJ/mol   
18
6th Energy Level
Not Available   
8,760.00 kJ/mol   
18
7th Energy level
Not Available   
10,230.00 kJ/mol   
19
8th Energy Level
Not Available   
11,800.00 kJ/mol   
19
9th Energy Level
Not Available   
15,600.00 kJ/mol   
17
10th Energy Level
Not Available   
17,100.00 kJ/mol   
19
11th Energy Level
Not Available   
31,270.00 kJ/mol   
6
Electrochemical Equivalent
1.48 g/amp-hr   
99+
1.64 g/amp-hr   
99+
Electron Work Function
3.63 eV   
30
2.59 eV   
99+
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Atomic Properties
Atomic Number
92   
26
38   
99+
Electron Configuration
[Rn] 5f3 6d1 7s2   
[Kr] 5s2   
Crystal Structure
Orthorhombic (ORTH)   
Face Centered Cubic (FCC)   
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100   
FCC-Crystal-Structure-of-Strontium.jpg#100   
Atom
  
  
Number of Protons
92   
26
38   
99+
Number of Neutrons
146   
13
50   
99+
Number of Electrons
92   
26
38   
99+
Radius of an Atom
  
  
Atomic Radius
156.00 pm   
29
215.00 pm   
5
Covalent Radius
196.00 pm   
14
195.00 pm   
15
Van der Waals Radius
186.00 pm   
33
249.00 pm   
7
Atomic Weight
238.03 amu   
21
87.62 amu   
99+
Atomic Volume
12.59 cm3/mol   
40
33.70 cm3/mol   
6
Adjacent Atomic Numbers
  
  
Previous Element
Protactinium
  
Rubidium
  
Next Element
Neptunium
  
Yttrium
  
Valence Electron Potential
170.00 (-eV)   
4
25.70 (-eV)   
99+
Lattice Constant
295.08 pm   
99+
608.49 pm   
6
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
19.10 g/cm3   
17
2.64 g/cm3   
99+
Density When Liquid (at m.p.)
17.30 g/cm3   
7
2.38 g/cm3   
99+
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
121.00 (Pa)   
1
Vapor Pressure at 2000 K
0.01 (Pa)   
20
Not Available   
Elasticity properties
  
  
Shear Modulus
111.00 GPa   
10
6.03 GPa   
99+
Bulk Modulus
100.00 GPa   
16
Not Available   
Young's Modulus
208.00 GPa   
10
15.70 GPa   
99+
Poisson Ratio
0.23   
30
0.28   
17
Other Mechanical Properties
Ductile, Malleable   
NA   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
18.80   
10
2.64   
99+
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Poor Conductor   
NA   
Resistivity
0.28 nΩ·m   
99+
132.00 nΩ·m   
24
Electrical Conductivity
0.04 106/cm Ω   
37
0.08 106/cm Ω   
26
Electron Affinity
Not Available   
5.03 kJ/mol   
38
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.30 J/(kg K)   
18
Molar Heat Capacity
27.67 J/mol·K   
15
26.40 J/mol·K   
28
Thermal Conductivity
27.50 W/m·K   
40
35.40 W/m·K   
37
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
13.90 µm/(m·K)   
27
22.50 µm/(m·K)   
18
Enthalpy
  
  
Enthalpy of Vaporization
477.00 kJ/mol   
13
150.00 kJ/mol   
99+
Enthalpy of Fusion
15.48 kJ/mol   
19
9.16 kJ/mol   
38
Enthalpy of Atomization
489.50 kJ/mol   
14
163.20 kJ/mol   
99+
Standard Molar Entropy
50.20 J/mol.K   
31
55.00 J/mol.K   
26
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