Home
 Compare Metals

Radium Darmstadtium Comparison

Radium
Darmstadtium
Darmstadtium Radium comparison


Periodic Table
Symbol
Ra  
Ds  
Group Number
2  
16
10  
8
Period Number
7  
7  
Block
s block  
d block  
Element Family
Alkaline Earth  
Probably Transition  
CAS Number
7440144  
99+
54083771  
8
Space Group Name
Im_ 3m  
-  
Space Group Number
229.00  
2
166.00  
9
Facts
Interesting Facts
  • Radium metal is the heaviest metal of Alkaline earth metals column.
  • Radium metal is highly radioactive and does not have any stable isotopes.
  
Darmstadtium is a synthetic element that is highly radioactive.  
Sources
Mining, Ores of metals  
Synthetically Produced  
History
  
  
Who Discovered
-  
Gesellschaft für Schwerionenforschung  
Discovery
In 1898  
In 1994  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
40
Abundance In Sun
0.00 %  
26
-  
Abundance In Meteorites
-  
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
-  
Abundance In Oceans
0.00 %  
99+
-  
Abundance In Humans
0.00 %  
23
-  
Uses
Uses & Benefits
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
  
  • Currently known uses of Darmstadtium metal are limited to research purpose only. As only few atoms of this metal are produced.
  
Industrial Uses
-  
-  
Medical Uses
Pharmaceutical Industry  
-  
Other Uses
-  
Research Purposes  
Biological Properties
  
  
Toxicity
Highly Toxic  
-  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
34
0.00 Blood/mg dm-3  
40
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
700.00 °C  
99+
-  
Boiling Point
1,737.00 °C  
99+
0.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
-  
Luster
Metallic  
Unknown Luster  
Hardness
  
  
Mohs Hardness
1.00  
22
6.00  
6
Brinell Hardness
700.00 MPa  
17
350.00 MPa  
36
Vickers Hardness
140.00 MPa  
99+
500.00 MPa  
35
Speed of Sound
3,150.00 m/s  
37
5,090.00 m/s  
13
Optical Properties
  
  
Refractive Index
1.00  
99+
1.30  
99+
Reflectivity
83.00 %  
6
50.00 %  
31
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ra  
Ds  
Isotopes
  
  
Known Isotopes
33  
6
9  
29
Electronegativity
  
  
Pauling Electronegativity
0.90  
99+
1.10  
99+
Sanderson Electronegativity
0.89  
99+
1.30  
25
Allred Rochow Electronegativity
0.97  
39
1.10  
31
Mulliken-Jaffe Electronegativity
0.92  
99+
1.10  
99+
Allen Electronegativity
0.89  
99+
1.10  
99+
Electropositivity
  
  
Pauling Electropositivity
3.10  
5
2.20  
39
Ionization Energies
  
  
1st Energy Level
509.30 kJ/mol  
99+
955.20 kJ/mol  
5
2nd Energy Level
979.00 kJ/mol  
99+
1,891.10 kJ/mol  
16
3rd Energy Level
509.30 kJ/mol  
99+
3,029.60 kJ/mol  
25
4th Energy Level
5,093.00 kJ/mol  
27
3,955.90 kJ/mol  
99+
5th Energy Level
5,090.00 kJ/mol  
99+
5,113.70 kJ/mol  
99+
6th Energy Level
5,090.00 kJ/mol  
99+
10,700.00 kJ/mol  
12
7th Energy level
5,090.00 kJ/mol  
99+
3,540.00 kJ/mol  
99+
8th Energy Level
5,090.00 kJ/mol  
99+
6,630.00 kJ/mol  
40
9th Energy Level
5,090.00 kJ/mol  
99+
7,180.00 kJ/mol  
29
10th Energy Level
5,090.00 kJ/mol  
99+
10,700.00 kJ/mol  
20
11th Energy Level
5,090.00 kJ/mol  
99+
3,540.00 kJ/mol  
99+
12th Energy Level
5,090.00 kJ/mol  
99+
34,800.00 kJ/mol  
28
13th Energy Level
5,090.00 kJ/mol  
99+
5,280.00 kJ/mol  
99+
14th Energy Level
5,090.00 kJ/mol  
99+
1,130.00 kJ/mol  
99+
15th Energy Level
50,900.00 kJ/mol  
99+
34,400.00 kJ/mol  
99+
16th Energy Level
50,900.00 kJ/mol  
99+
34,800.00 kJ/mol  
99+
17th Energy Level
509.30 kJ/mol  
99+
1,139.00 kJ/mol  
18
18th Energy Level
5,090.00 kJ/mol  
99+
1,080.00 kJ/mol  
99+
19th Energy Level
509.30 kJ/mol  
99+
1,139.90 kJ/mol  
15
20th Energy Level
509.00 kJ/mol  
99+
0.00 kJ/mol  
99+
21st Energy Level
509.30 kJ/mol  
99+
1,080.00 kJ/mol  
32
22nd Energy Level
509.00 kJ/mol  
99+
350.00 kJ/mol  
99+
23rd Energy Level
509.30 kJ/mol  
99+
1,100.00 kJ/mol  
35
24th Energy Level
509.30 kJ/mol  
99+
565.80 kJ/mol  
99+
25th Energy Level
509.00 kJ/mol  
99+
0.00 kJ/mol  
99+
26th Energy Level
509.30 kJ/mol  
99+
582.30 kJ/mol  
99+
27th Energy Level
509.30 kJ/mol  
99+
0.00 kJ/mol  
99+
28th Energy Level
509.30 kJ/mol  
99+
1,130.00 kJ/mol  
4
29th Energy Level
509.30 kJ/mol  
99+
1,130.00 kJ/mol  
4
30th Energy Level
509.00 kJ/mol  
99+
663.20 kJ/mol  
33
Electrochemical Equivalent
4.22 g/amp-hr  
6
3.00 g/amp-hr  
21
Electron Work Function
4.30 eV  
25
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
88  
30
110  
8
Electron Configuration
[Rn] 7s2  
[Rn] 5f14 6d8 7s2  
Crystal Structure
Body Centered Cubic (BCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
88  
30
110  
8
Number of Neutrons
138  
17
161  
4
Number of Electrons
88  
30
110  
8
Radius of an Atom
  
  
Atomic Radius
215.00 pm  
6
132.00 pm  
99+
Covalent Radius
221.00 pm  
3
128.00 pm  
99+
Van der Waals Radius
283.00 pm  
5
0.00 pm  
99+
Atomic Weight
226.00 amu  
26
281.00 amu  
6
Atomic Volume
45.20 cm3/mol  
5
20.50 cm3/mol  
29
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Meitnerium
  
Next Element
Actinium
  
Roentgenium
  
Valence Electron Potential
20.10 (-eV)  
99+
0.00 (-eV)  
99+
Lattice Constant
514.80 pm  
15
0.00 pm  
99+
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.57  
99+
1.61  
19
Mechanical
Density
  
  
Density At Room Temperature
5.50 g/cm3  
99+
35.00 g/cm3  
4
Density When Liquid (at m.p.)
5.50 g/cm3  
99+
34.80 g/cm3  
5
Tensile Strength
40.00 MPa  
99+
0.10 MPa  
99+
Viscosity
0.00  
2
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
16
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
33
0.00 (Pa)  
37
Elasticity properties
  
  
Shear Modulus
25.00 GPa  
38
33.00 GPa  
23
Bulk Modulus
43.00 GPa  
33
38.00 GPa  
99+
Young's Modulus
83.00 GPa  
25
0.00 GPa  
99+
Poisson Ratio
0.31  
13
0.25  
24
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
5.00  
99+
34.80  
7
Magnetic Ordering
Nonmagnetic  
-  
Permeability
0.00 H/m  
9
0.00 H/m  
17
Susceptibility
0.00  
18
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
100.00 nΩ·m  
31
8.30 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.00 106/cm Ω  
99+
Electron Affinity
0.90 kJ/mol  
99+
-  
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.10 J/(kg K)  
99+
Molar Heat Capacity
20.05 J/mol·K  
99+
27.30 J/mol·K  
23
Thermal Conductivity
18.60 W/m·K  
99+
0.00 W/m·K  
99+
Critical Temperature
973.00 K  
99+
1,323.00 K  
99+
Thermal Expansion
8.50 µm/(m·K)  
99+
12.90 µm/(m·K)  
38
Enthalpy
  
  
Enthalpy of Vaporization
113.00 kJ/mol  
99+
348.90 kJ/mol  
34
Enthalpy of Fusion
8.60 kJ/mol  
99+
-  
Enthalpy of Atomization
163.00 kJ/mol  
99+
-  
Standard Molar Entropy
71.00 J/mol.K  
14
57.00 J/mol.K  
30
Summary >>
<< Thermal

Compare Alkali Metals

Alkali Metals

Alkali Metals

» More Alkali Metals

Compare Alkali Metals

» More Compare Alkali Metals
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!