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Strontium Darmstadtium Comparison


Darmstadtium Strontium comparison


Periodic Table

Symbol
Sr   
Ds   

Group Number
2   
16
10   
8

Period Number
5   
7   

Block
s block   
d block   

Element Family
Alkaline Earth   
Probably Transition   

CAS Number
7440246   
99+
54083771   
8

Space Group Name
Fm_ 3m   
Not Available   

Space Group Number
225.00   
2
Not Available   

Facts

Interesting Facts
  • Strontium element is softer than Calcium.
  • Silvery Strontium turns yellow, if exposed to air.
  
Not Available   

Sources
Found in Minerals, Mining, Ores of Minerals   
Synthetically Produced   

History
  
  

Who Discovered
William Cruickshank   
Gesellschaft für Schwerionenforschung   

Discovery
In 1787   
In 1994   

Abundance
  
  

Abundance In Universe
4 * 10-6 %   
14
Not Available   

Abundance In Sun
~0.000005 %   
15
~-9999 %   

Abundance In Meteorites
0.00 %   
15
Not Available   

Abundance In Earth's Crust
0.04 %   
10
Not Available   

Abundance In Oceans
0.00 %   
4
Not Available   

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.
  
  • Currently known uses of Darmstadtium metal are limited to research purpose only. As only few atoms of this metal are produced.
  

Industrial Uses
Ammunition Industry, Chemical Industry   
NA   

Medical Uses
NA   
NA   

Other Uses
Alloys   
Research Purposes   

Biological Properties
  
  

Toxicity
Non Toxic   
Unknown   

Present in Human Body
Yes   
No   

In Blood
0.03 Blood/mg dm-3   
19
0.00 Blood/mg dm-3   
37

In Bone
140.00 p.p.m.   
7
0.00 p.p.m.   
36

Physical Properties

Melting Point
769.00 °C   
99+
Not Available   

Boiling Point
1,384.00 °C   
99+
Not Available   

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Unknown   

Luster
Metallic   
Unknown Luster   

Hardness
  
  

Mohs Hardness
1.50   
18
Not Available   

Speed of Sound
Not Available   
5,090.00 m/s   
9

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   
Ds   

Isotopes
  
  

Known Isotopes
27   
12
9   
29

Electronegativity
  
  

Pauling Electronegativity
0.95   
99+
Not Available   

Sanderson Electronegativity
0.72   
27
Not Available   

Allred Rochow Electronegativity
0.99   
37
Not Available   

Mulliken-Jaffe Electronegativity
1.00   
18
Not Available   

Allen Electronegativity
0.96   
40
Not Available   

Electropositivity
  
  

Pauling Electropositivity
3.05   
7
Not Available   

Ionization Energies
  
  

1st Energy Level
549.50 kJ/mol   
99+
955.20 kJ/mol   
5

2nd Energy Level
1,064.20 kJ/mol   
99+
1,891.10 kJ/mol   
16

3rd Energy Level
4,138.00 kJ/mol   
10
3,029.60 kJ/mol   
25

4th Energy Level
5,500.00 kJ/mol   
13
3,955.90 kJ/mol   
40

5th Energy Level
6,910.00 kJ/mol   
18
5,113.70 kJ/mol   
33

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+
Not Available   

Electron Work Function
2.59 eV   
99+
Not Available   

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

Atomic Properties

Atomic Number
38   
99+
110   
8

Electron Configuration
[Kr] 5s2   
[Rn] 5f14 6d8 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+
110   
8

Number of Neutrons
50   
99+
161   
3

Number of Electrons
38   
99+
110   
8

Radius of an Atom
  
  

Atomic Radius
215.00 pm   
5
132.00 pm   
99+

Covalent Radius
195.00 pm   
15
128.00 pm   
99+

Van der Waals Radius
249.00 pm   
7
Not Available   

Atomic Weight
87.62 amu   
99+
281.00 amu   
6

Atomic Volume
33.70 cm3/mol   
6
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Rubidium
  
Meitnerium
  

Next Element
Yttrium
  

Valence Electron Potential
25.70 (-eV)   
99+
Not Available   

Lattice Constant
608.49 pm   
6
Not Available   

Lattice Angles
π/2, π/2, π/2   
NA   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
2.64 g/cm3   
99+
Not Available   

Density When Liquid (at m.p.)
2.38 g/cm3   
99+
Not Available   

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

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

Elasticity properties
  
  

Shear Modulus
6.03 GPa   
99+
Not Available   

Young's Modulus
15.70 GPa   
99+
Not Available   

Poisson Ratio
0.28   
17
Not Available   

Other Mechanical Properties
NA   
Unknown   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
2.64   
99+
Not Available   

Magnetic Ordering
Paramagnetic   
Unknown   

Electrical Properties
  
  

Electrical Property
NA   
Unknown   

Resistivity
132.00 nΩ·m   
24
Not Available   

Electrical Conductivity
0.08 106/cm Ω   
26
Not Available   

Electron Affinity
5.03 kJ/mol   
38
Not Available   

Thermal Properties

Specific Heat
0.30 J/(kg K)   
18
Not Available   

Molar Heat Capacity
26.40 J/mol·K   
28
Not Available   

Thermal Conductivity
35.40 W/m·K   
37
Not Available   

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
22.50 µm/(m·K)   
18
Not Available   

Enthalpy
  
  

Enthalpy of Vaporization
150.00 kJ/mol   
99+
Not Available   

Enthalpy of Fusion
9.16 kJ/mol   
38
Not Available   

Enthalpy of Atomization
163.20 kJ/mol   
99+
Not Available   

Standard Molar Entropy
55.00 J/mol.K   
26
Not Available   

Summary >>
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