Home
Compare Metals


Zirconium vs Radium


Radium vs Zirconium


Periodic Table

Symbol
Zr   
Ra   

Group Number
4   
14
2   
16

Period Number
5   
7   

Block
d block   
s block   

Element Family
Transition Metal   
Alkaline Earth   

CAS Number
7440677   
23
7440144   
99+

Space Group Name
P63/mmc   
Im_ 3m   

Space Group Number
194.00   
5
229.00   
1

Facts

Interesting Facts
  • Zirconium metal can resist to weak acids.
  • Zirconium metal reacts with oxygen and nitrogen in the atmosphere.
  
  • Radium metal is the heaviest metal of Alkaline earth metals column.
  • Radium metal is highly radioactive and does not have any stable isotopes.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Mining, Ores of metals   

History
  
  

Who Discovered
Martin Heinrich Klaproth   
Not Available   

Discovery
In 1789   
In 1898   

Abundance
  
  

Abundance In Universe
5 * 10-6 %   
13
Not Available   

Abundance In Sun
~0.000004 %   
16
~-9999 %   

Abundance In Meteorites
0.00 %   
17
Not Available   

Abundance In Earth's Crust
0.01 %   
14
0.00 %   
99+

Abundance In Oceans
0.00 %   
23
0.00 %   
99+

Abundance In Humans
0.00 %   
15
0.00 %   
20

Uses

Uses & Benefits
  • As this metal does not absorb neutrons; It is used in nuclear power stations.
  • Its oxide is used in ultra strong ceramics. It is also used in manufacturing Crucibles.
  
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
  

Industrial Uses
Aerospace Industry, Ammunition Industry   
NA   

Medical Uses
NA   
Pharmaceutical Industry   

Other Uses
Alloys, Nuclear Research, Research Purposes   
NA   

Biological Properties
  
  

Toxicity
NA   
Highly Toxic   

Present in Human Body
Yes   
No   

In Blood
0.01 Blood/mg dm-3   
21
Not Available   

In Bone
0.10 p.p.m.   
23
Not Available   

Physical Properties

Melting Point
1,852.00 °C   
15
700.00 °C   
99+

Boiling Point
4,377.00 °C   
11
1,737.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery White   

Luster
Lustrous   
Metallic   

Hardness
  
  

Mohs Hardness
5.00   
8
Not Available   

Brinell Hardness
638.00 MPa   
19
Not Available   

Vickers Hardness
820.00 MPa   
15
Not Available   

Speed of Sound
3,800.00 m/s   
20
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
Zr   
Ra   

Isotopes
  
  

Known Isotopes
24   
15
33   
6

Electronegativity
  
  

Pauling Electronegativity
1.33   
30
0.90   
99+

Sanderson Electronegativity
0.90   
25
Not Available   

Allred Rochow Electronegativity
1.22   
26
0.97   
38

Mulliken-Jaffe Electronegativity
Not Available   
0.92   
20

Allen Electronegativity
1.32   
34
0.89   
99+

Electropositivity
  
  

Pauling Electropositivity
2.67   
24
3.10   
5

Ionization Energies
  
  

1st Energy Level
640.10 kJ/mol   
99+
509.30 kJ/mol   
99+

2nd Energy Level
1,270.00 kJ/mol   
99+
979.00 kJ/mol   
99+

3rd Energy Level
2,218.00 kJ/mol   
99+
Not Available   

4th Energy Level
3,313.00 kJ/mol   
99+
Not Available   

5th Energy Level
7,752.00 kJ/mol   
10
Not Available   

6th Energy Level
9,500.00 kJ/mol   
15
Not Available   

Electrochemical Equivalent
0.85 g/amp-hr   
99+
4.22 g/amp-hr   
6

Electron Work Function
4.05 eV   
26
Not Available   

Other Chemical Properties
Anti Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Radioactivity   

Atomic Properties

Atomic Number
40   
99+
88   
30

Electron Configuration
[Kr] 4d2 5s2   
[Rn] 7s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   

Crystal Lattice
HCP-Crystal-Structure-of-Zirconium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
40   
99+
88   
30

Number of Neutrons
51   
99+
138   
16

Number of Electrons
40   
99+
88   
30

Radius of an Atom
  
  

Atomic Radius
160.00 pm   
27
Not Available   

Covalent Radius
175.00 pm   
23
221.00 pm   
3

Van der Waals Radius
200.00 pm   
28
283.00 pm   
4

Atomic Weight
91.22 amu   
99+
226.00 amu   
26

Atomic Volume
14.10 cm3/mol   
36
45.20 cm3/mol   
4

Adjacent Atomic Numbers
  
  

Previous Element
Yttrium
  
Francium
  

Next Element
Niobium
  
Actinium
  

Valence Electron Potential
80.00 (-eV)   
18
20.10 (-eV)   
99+

Lattice Constant
323.20 pm   
99+
514.80 pm   
13

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   

Lattice C/A Ratio
1.59   
8
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
6.52 g/cm3   
99+
5.50 g/cm3   
99+

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

Tensile Strength
330.00 MPa   
12
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 2000 K
0.00 (Pa)   
21
Not Available   

Elasticity properties
  
  

Shear Modulus
33.00 GPa   
20
Not Available   

Bulk Modulus
91.10 GPa   
17
Not Available   

Young's Modulus
88.00 GPa   
22
Not Available   

Poisson Ratio
0.34   
10
Not Available   

Other Mechanical Properties
Ductile, Malleable   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
6.51   
99+
5.00   
99+

Magnetic Ordering
Paramagnetic   
Nonmagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
NA   

Resistivity
421.00 nΩ·m   
11
100.00 nΩ·m   
31

Electrical Conductivity
0.02 106/cm Ω   
99+
Not Available   

Electron Affinity
41.10 kJ/mol   
27
Not Available   

Thermal Properties

Specific Heat
0.27 J/(kg K)   
19
0.12 J/(kg K)   
40

Molar Heat Capacity
25.36 J/mol·K   
99+
Not Available   

Thermal Conductivity
22.60 W/m·K   
99+
18.60 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
5.70 µm/(m·K)   
99+
Not Available   

Enthalpy
  
  

Enthalpy of Vaporization
581.60 kJ/mol   
9
Not Available   

Enthalpy of Fusion
20.90 kJ/mol   
11
Not Available   

Enthalpy of Atomization
598.00 kJ/mol   
10
163.00 kJ/mol   
99+

Standard Molar Entropy
39.00 J/mol.K   
39
71.00 J/mol.K   
14

Periodic Table >>
<< All

Compare Transition Metals

Transition Metals

Transition Metals

» More Transition Metals

Compare Transition Metals

» More Compare Transition Metals