Home
 Compare Metals

Radium vs Neodymium

Radium
Neodymium
Neodymium vs Radium


Periodic Table
Symbol
Ra  
-  
Group Number
2  
16
1  
17
Period Number
7  
6  
Block
s block  
f block  
Element Family
Alkaline Earth  
Lanthanide  
CAS Number
7440144  
99+
7440008  
99+
Space Group Name
Im_ 3m  
P63/mmc  
Space Group Number
229.00  
2
194.00  
7
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.
  
  • Neodymium is not found free in nature, hence it is not a native metal.
  • Neodymium metal found in minerals like Monazite and Bastnaesite.
  
Sources
Mining, Ores of metals  
Found in Minerals, Mining  
History
  
  
Who Discovered
-  
Carl Auer von Welsbach  
Discovery
In 1898  
In 1885  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
17
Abundance In Sun
0.00 %  
26
0.00 %  
24
Abundance In Meteorites
-  
0.00 %  
30
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
20
Abundance In Oceans
0.00 %  
99+
0.00 %  
30
Abundance In Humans
0.00 %  
23
0.00 %  
24
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.
  
  • Neodymium-Iron-boron alloy is used to make permanent magnets.
  • It is used in microphones, Mp3 player, loudspeakers, mobile phones, etc.
  
Industrial Uses
-  
Aerospace Industry, Electrical Industry, Electronic Industry  
Medical Uses
Pharmaceutical Industry  
-  
Other Uses
-  
Alloys  
Biological Properties
  
  
Toxicity
Highly Toxic  
Non Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
34
0.00 Blood/mg dm-3  
34
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
700.00 °C  
99+
1,010.00 °C  
99+
Boiling Point
1,737.00 °C  
99+
3,127.00 °C  
29
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery White  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
1.00  
22
7.00  
3
Brinell Hardness
700.00 MPa  
17
265.00 MPa  
99+
Vickers Hardness
140.00 MPa  
99+
345.00 MPa  
99+
Speed of Sound
3,150.00 m/s  
37
2,330.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.00  
99+
1.64  
30
Reflectivity
83.00 %  
6
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ra  
-  
Isotopes
  
  
Known Isotopes
33  
6
30  
9
Electronegativity
  
  
Pauling Electronegativity
0.90  
99+
1.14  
99+
Sanderson Electronegativity
0.89  
99+
1.14  
35
Allred Rochow Electronegativity
0.97  
39
1.07  
33
Mulliken-Jaffe Electronegativity
0.92  
99+
1.14  
99+
Allen Electronegativity
0.89  
99+
1.14  
99+
Electropositivity
  
  
Pauling Electropositivity
3.10  
5
2.86  
13
Ionization Energies
  
  
1st Energy Level
509.30 kJ/mol  
99+
533.10 kJ/mol  
99+
2nd Energy Level
979.00 kJ/mol  
99+
1,040.00 kJ/mol  
99+
3rd Energy Level
509.30 kJ/mol  
99+
2,130.00 kJ/mol  
99+
4th Energy Level
5,093.00 kJ/mol  
27
3,900.00 kJ/mol  
99+
5th Energy Level
5,090.00 kJ/mol  
99+
5,330.00 kJ/mol  
99+
6th Energy Level
5,090.00 kJ/mol  
99+
5,330.00 kJ/mol  
99+
7th Energy level
5,090.00 kJ/mol  
99+
5,331.00 kJ/mol  
99+
8th Energy Level
5,090.00 kJ/mol  
99+
5,360.00 kJ/mol  
99+
9th Energy Level
5,090.00 kJ/mol  
99+
5,330.00 kJ/mol  
99+
10th Energy Level
5,090.00 kJ/mol  
99+
5,330.00 kJ/mol  
99+
11th Energy Level
5,090.00 kJ/mol  
99+
5,330.00 kJ/mol  
99+
12th Energy Level
5,090.00 kJ/mol  
99+
5,330.00 kJ/mol  
99+
13th Energy Level
5,090.00 kJ/mol  
99+
5,330.00 kJ/mol  
99+
14th Energy Level
5,090.00 kJ/mol  
99+
533.10 kJ/mol  
99+
15th Energy Level
50,900.00 kJ/mol  
99+
53,300.00 kJ/mol  
99+
16th Energy Level
50,900.00 kJ/mol  
99+
533.10 kJ/mol  
99+
17th Energy Level
509.30 kJ/mol  
99+
533.10 kJ/mol  
99+
18th Energy Level
5,090.00 kJ/mol  
99+
5,331.00 kJ/mol  
99+
19th Energy Level
509.30 kJ/mol  
99+
533.10 kJ/mol  
99+
20th Energy Level
509.00 kJ/mol  
99+
536.00 kJ/mol  
99+
21st Energy Level
509.30 kJ/mol  
99+
533.10 kJ/mol  
99+
22nd Energy Level
509.00 kJ/mol  
99+
533.00 kJ/mol  
99+
23rd Energy Level
509.30 kJ/mol  
99+
5,331.00 kJ/mol  
27
24th Energy Level
509.30 kJ/mol  
99+
533.10 kJ/mol  
99+
25th Energy Level
509.00 kJ/mol  
99+
533.10 kJ/mol  
99+
26th Energy Level
509.30 kJ/mol  
99+
533.10 kJ/mol  
99+
27th Energy Level
509.30 kJ/mol  
99+
533.10 kJ/mol  
99+
28th Energy Level
509.30 kJ/mol  
99+
533.10 kJ/mol  
99+
29th Energy Level
509.30 kJ/mol  
99+
533.10 kJ/mol  
99+
30th Energy Level
509.00 kJ/mol  
99+
533.10 kJ/mol  
99+
Electrochemical Equivalent
4.22 g/amp-hr  
6
1.79 g/amp-hr  
99+
Electron Work Function
4.30 eV  
25
3.20 eV  
99+
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Chemical Stability, Corrosion, Flammable, Ionization  
Atomic
Atomic Number
88  
30
60  
99+
Electron Configuration
[Rn] 7s2  
[Xe] 4f4 6s2  
Crystal Structure
Body Centered Cubic (BCC)  
Double Hexagonal Close Packed (DHCP)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
DHCP-Crystal-Structure-of-Neodymium.jpg#100  
Atom
  
  
Number of Protons
88  
30
60  
99+
Number of Neutrons
138  
17
84  
99+
Number of Electrons
88  
30
60  
99+
Radius of an Atom
  
  
Atomic Radius
215.00 pm  
6
181.00 pm  
15
Covalent Radius
221.00 pm  
3
201.00 pm  
10
Van der Waals Radius
283.00 pm  
5
229.00 pm  
25
Atomic Weight
226.00 amu  
26
144.24 amu  
99+
Atomic Volume
45.20 cm3/mol  
5
20.60 cm3/mol  
28
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Praseodymium
  
Next Element
Actinium
  
Promethium
  
Valence Electron Potential
20.10 (-eV)  
99+
43.40 (-eV)  
99+
Lattice Constant
514.80 pm  
15
365.80 pm  
33
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.57  
99+
1.61  
18
Mechanical
Density
  
  
Density At Room Temperature
5.50 g/cm3  
99+
7.01 g/cm3  
99+
Density When Liquid (at m.p.)
5.50 g/cm3  
99+
6.89 g/cm3  
99+
Tensile Strength
40.00 MPa  
99+
345.00 MPa  
13
Viscosity
0.00  
2
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
16
0.00 (Pa)  
23
Vapor Pressure at 2000 K
0.00 (Pa)  
33
101.00 (Pa)  
2
Elasticity properties
  
  
Shear Modulus
25.00 GPa  
38
16.30 GPa  
99+
Bulk Modulus
43.00 GPa  
33
31.80 GPa  
99+
Young's Modulus
83.00 GPa  
25
41.40 GPa  
99+
Poisson Ratio
0.31  
13
0.28  
16
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
5.00  
99+
7.00  
99+
Magnetic Ordering
Nonmagnetic  
Paramagnetic  
Permeability
0.00 H/m  
9
0.00 H/m  
7
Susceptibility
0.00  
18
0.00  
9
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
100.00 nΩ·m  
31
643.00 nΩ·m  
6
Electrical Conductivity
0.00 106/cm Ω  
99+
0.02 106/cm Ω  
99+
Electron Affinity
0.90 kJ/mol  
99+
50.00 kJ/mol  
26
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.19 J/(kg K)  
33
Molar Heat Capacity
20.05 J/mol·K  
99+
27.45 J/mol·K  
22
Thermal Conductivity
18.60 W/m·K  
99+
16.50 W/m·K  
99+
Critical Temperature
973.00 K  
99+
1,297.00 K  
99+
Thermal Expansion
8.50 µm/(m·K)  
99+
9.60 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
113.00 kJ/mol  
99+
273.00 kJ/mol  
99+
Enthalpy of Fusion
8.60 kJ/mol  
99+
7.14 kJ/mol  
99+
Enthalpy of Atomization
163.00 kJ/mol  
99+
322.00 kJ/mol  
99+
Standard Molar Entropy
71.00 J/mol.K  
14
71.50 J/mol.K  
13
Periodic Table >>
<< All

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!