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Strontium vs Uranium


Uranium vs Strontium


Periodic Table

Symbol
Sr   
U   

Group Number
2   
16
0   
18

Period Number
5   
7   

Block
s block   
f block   

Element Family
Alkaline Earth   
Actinide   

CAS Number
7440246   
99+
7440611   
28

Space Group Name
Fm_ 3m   
Cmcm   

Space Group Number
225.00   
2
63.00   
10

Facts

Interesting Facts
  • Strontium element is softer than Calcium.
  • Silvery Strontium turns yellow, if exposed to air.
  
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Earth's crust, Mining, Ores of Minerals   

History
  
  

Who Discovered
William Cruickshank   
Not Available   

Discovery
In 1787   
In 1789   

Abundance
  
  

Abundance In Universe
4 * 10-6 %   
14
2 * 10-8 %   
29

Abundance In Sun
~0.000005 %   
15
~0.0000001 %   
26

Abundance In Meteorites
0.00 %   
15
0.00 %   
99+

Abundance In Earth's Crust
0.04 %   
10
0.00 %   
36

Abundance In Oceans
0.00 %   
4
0.00 %   
11

Abundance In Humans
0.00 %   
7
Not Available   

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.
  
  • 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.
  

Industrial Uses
Ammunition Industry, Chemical Industry   
Ammunition Industry, Chemical Industry   

Medical Uses
NA   
NA   

Other Uses
Alloys   
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues   

Biological Properties
  
  

Toxicity
Non Toxic   
Toxic   

Present in Human Body
Yes   
No   

In Blood
0.03 Blood/mg dm-3   
19
Not Available   

In Bone
140.00 p.p.m.   
7
Not Available   

Physical Properties

Melting Point
769.00 °C   
99+
1,132.00 °C   
39

Boiling Point
1,384.00 °C   
99+
3,818.00 °C   
16

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery Gray   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
1.50   
18
6.00   
6

Brinell Hardness
Not Available   
2,350.00 MPa   
2

Vickers Hardness
Not Available   
1,960.00 MPa   
2

Speed of Sound
Not Available   
3,155.00 m/s   
25

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
Sr   
U   

Isotopes
  
  

Known Isotopes
27   
12
25   
14

Electronegativity
  
  

Pauling Electronegativity
0.95   
99+
1.38   
28

Sanderson Electronegativity
0.72   
27
Not Available   

Allred Rochow Electronegativity
0.99   
37
1.22   
26

Mulliken-Jaffe Electronegativity
1.00   
18
Not Available   

Allen Electronegativity
0.96   
40
Not Available   

Electropositivity
  
  

Pauling Electropositivity
3.05   
7
2.62   
26

Ionization Energies
  
  

1st Energy Level
549.50 kJ/mol   
99+
597.60 kJ/mol   
99+

2nd Energy Level
1,064.20 kJ/mol   
99+
1,420.00 kJ/mol   
99+

3rd Energy Level
4,138.00 kJ/mol   
10
1,900.00 kJ/mol   
99+

4th Energy Level
5,500.00 kJ/mol   
13
3,145.00 kJ/mol   
99+

5th Energy Level
6,910.00 kJ/mol   
18
Not Available   

6th Energy Level
8,760.00 kJ/mol   
18
Not Available   

7th Energy level
10,230.00 kJ/mol   
19
Not Available   

8th Energy Level
11,800.00 kJ/mol   
19
Not Available   

9th Energy Level
15,600.00 kJ/mol   
17
Not Available   

10th Energy Level
17,100.00 kJ/mol   
19
Not Available   

11th Energy Level
31,270.00 kJ/mol   
6
Not Available   

Electrochemical Equivalent
1.64 g/amp-hr   
99+
1.48 g/amp-hr   
99+

Electron Work Function
2.59 eV   
99+
3.63 eV   
30

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Ionization, Radioactive Isotopes, Radioactivity   

Atomic Properties

Atomic Number
38   
99+
92   
26

Electron Configuration
[Kr] 5s2   
[Rn] 5f3 6d1 7s2   

Crystal Structure
Face Centered Cubic (FCC)   
Orthorhombic (ORTH)   

Crystal Lattice
FCC-Crystal-Structure-of-Strontium.jpg#100   
ORTH-Crystal-Structure-of-Uranium.jpg#100   

Atom
  
  

Number of Protons
38   
99+
92   
26

Number of Neutrons
50   
99+
146   
13

Number of Electrons
38   
99+
92   
26

Radius of an Atom
  
  

Atomic Radius
215.00 pm   
5
156.00 pm   
29

Covalent Radius
195.00 pm   
15
196.00 pm   
14

Van der Waals Radius
249.00 pm   
7
186.00 pm   
33

Atomic Weight
87.62 amu   
99+
238.03 amu   
21

Atomic Volume
33.70 cm3/mol   
6
12.59 cm3/mol   
40

Adjacent Atomic Numbers
  
  

Previous Element
Rubidium
  

Next Element
Yttrium
  
Neptunium
  

Valence Electron Potential
25.70 (-eV)   
99+
170.00 (-eV)   
4

Lattice Constant
608.49 pm   
6
295.08 pm   
99+

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
2.64 g/cm3   
99+
19.10 g/cm3   
17

Density When Liquid (at m.p.)
2.38 g/cm3   
99+
17.30 g/cm3   
7

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
121.00 (Pa)   
1
Not Available   

Vapor Pressure at 2000 K
Not Available   
0.01 (Pa)   
20

Elasticity properties
  
  

Shear Modulus
6.03 GPa   
99+
111.00 GPa   
10

Bulk Modulus
Not Available   
100.00 GPa   
16

Young's Modulus
15.70 GPa   
99+
208.00 GPa   
10

Poisson Ratio
0.28   
17
0.23   
30

Other Mechanical Properties
NA   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
2.64   
99+
18.80   
10

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
NA   
Poor Conductor   

Resistivity
132.00 nΩ·m   
24
0.28 nΩ·m   
99+

Electrical Conductivity
0.08 106/cm Ω   
26
0.04 106/cm Ω   
37

Electron Affinity
5.03 kJ/mol   
38
Not Available   

Thermal Properties

Specific Heat
0.30 J/(kg K)   
18
0.12 J/(kg K)   
40

Molar Heat Capacity
26.40 J/mol·K   
28
27.67 J/mol·K   
15

Thermal Conductivity
35.40 W/m·K   
37
27.50 W/m·K   
40

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
22.50 µm/(m·K)   
18
13.90 µm/(m·K)   
27

Enthalpy
  
  

Enthalpy of Vaporization
150.00 kJ/mol   
99+
477.00 kJ/mol   
13

Enthalpy of Fusion
9.16 kJ/mol   
38
15.48 kJ/mol   
19

Enthalpy of Atomization
163.20 kJ/mol   
99+
489.50 kJ/mol   
14

Standard Molar Entropy
55.00 J/mol.K   
26
50.20 J/mol.K   
31

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