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What is Radium?

Radium In Periodic Table

Radium Symbol
Ra

Group Number
2
16
📊

Period Number
7
📊

Block
s block
📊

Element Family
Alkaline Earth
📊

CAS Number of Radium
7440144
65

Space Group Name
Im_ 3m

Space Group Number
229.00
1
📊

Facts about Radium

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.

Sources
Mining, Ores of metals

History of Radium

Who Discovered
Not Available

Discovery
In 1898

Abundance of Radium

Abundance In Universe
Not Available

Abundance In Sun
Not Available

Abundance In Meteorites
Not Available

Abundance In Earth's Crust
0.00 %
57
📊

Abundance In Oceans
0.00 %
45
📊

Abundance In Humans
0.00 %
20
📊

Uses of Radium

Uses & Benefits
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.

Industrial Uses
NA

Medical Uses
Pharmaceutical Industry

Other Uses
NA

Biological Properties

Toxicity
Highly Toxic
📊

Present in Human Body
📊

In Blood
Not Available

In Bone
Not Available

Physical Properties of Radium

Radium Melting Point
700.00 °C
59
📊

Radium Boiling Point
1,737.00 °C
54
📊

Appearance of Radium

Physical State
Solid
📊

Color
Silvery White

Luster
Metallic
📊

Hardness of Radium

Mohs Hardness
Not Available

Brinell Hardness
Not Available

Vickers Hardness
Not Available

Speed of Sound
Not Available

Optical Properties

Refractive Index
Not Available

Reflectivity
Not Available

Allotropes

α Allotropes
Not Available

β Allotropes
Not Available

γ Allotropes
Not Available

Chemical Properties of Radium

Chemical Formula
Ra

Isotopes of Radium

Known Isotopes
33
6
📊

Electronegativity

Pauling Electronegativity
0.90
49
📊

Sanderson Electronegativity
Not Available

Allred Rochow Electronegativity
0.97
38
📊

Mulliken-Jaffe Electronegativity
0.92
20
📊

Allen Electronegativity
0.89
42
📊

Electropositivity

Pauling Electropositivity
3.10
5
📊

Ionization Energies

1st Energy Level
509.30 kJ/mol
82
📊

2nd Energy Level
979.00 kJ/mol
81
📊

3rd Energy Level
Not Available

4th Energy Level
Not Available

5th Energy Level
Not Available

6th Energy Level
Not Available

7th Energy level
Not Available

8th Energy Level
Not Available

9th Energy Level
Not Available

10th Energy Level
Not Available

11th Energy Level
Not Available

12th Energy Level
Not Available

13th Energy Level
Not Available

14th Energy Level
Not Available

15th Energy Level
Not Available

16th Energy Level
Not Available

17th Energy Level
Not Available

18th Energy Level
Not Available

19th Energy Level
Not Available

20th Energy Level
Not Available

21st Energy Level
Not Available

22nd Energy Level
Not Available

23rd Energy Level
Not Available

24th Energy Level
Not Available

25th Energy Level
Not Available

26th Energy Level
Not Available

27th Energy Level
Not Available

28th Energy Level
Not Available

29th Energy Level
Not Available

30th Energy Level
Not Available

Electrochemical Equivalent
4.22 g/amp-hr
6
📊

Electron Work Function
Not Available

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity

Atomic Properties of Radium

Atomic Number of Radium
88
30
📊

Radium Electron Configuration
[Rn] 7s2

Crystal Structure
Body Centered Cubic (BCC)
📊

Crystal Lattice
BCC-Crystal-Structure-.jpg#100

Atom of Radium

Number of Protons
88
30
📊

Number of Neutrons
138
17
📊

Number of Electrons
88
30
📊

Radius of an Atom

Atomic Radius
Not Available

Covalent Radius
221.00 pm
3
📊

Van der Waals Radius
283.00 pm
4
📊

Atomic Weight
226.00 amu
26
📊

Atomic Volume
45.20 cm3/mol
4
📊

Adjacent Atomic Numbers

Previous Element

Next Element

Valence Electron Potential
20.10 (-eV)
59
📊

Lattice Constant
514.80 pm
13
📊

Lattice Angles
π/2, π/2, π/2

Lattice C/A Ratio
Not Available

Mechanical Properties of Radium

Radium Density

Density At Room Temperature
5.50 g/cm3
68
📊

Density When Liquid (at m.p.)
Not Available

Tensile Strength
Not Available

Viscosity
Not Available

Vapor Pressure of Radium

Vapor Pressure at 1000 K
Not Available

Vapor Pressure at 2000 K
Not Available

Elasticity properties

Shear Modulus
Not Available

Bulk Modulus
Not Available

Young's Modulus
Not Available

Poisson Ratio
Not Available

Other Mechanical Properties
NA

Magnetic Properties of Radium

Magnetic Characteristics of Radium

Specific Gravity
5.00
56
📊

Magnetic Ordering
Nonmagnetic
📊

Permeability
Not Available

Susceptibility
Not Available

Electrical Properties

Electrical Property
NA

Resistivity
100.00 nΩ·m
31
📊

Electrical Conductivity
Not Available

Electron Affinity
Not Available

Thermal Properties of Radium

Specific Heat
0.12 J/(kg K)
40
📊

Molar Heat Capacity
Not Available

Thermal Conductivity
18.60 W/m·K
45
📊

Critical Temperature
Not Available

Thermal Expansion
Not Available

Enthalpy of Radium

Enthalpy of Vaporization
Not Available

Enthalpy of Fusion
Not Available

Enthalpy of Atomization
163.00 kJ/mol
51
📊

Standard Molar Entropy
71.00 J/mol.K
14
📊