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What is Radium?

All Metals

Nihonium
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Moscovium
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Tennessine
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Radium In Periodic Table

Symbol
Ra

Group Number
2
16
📊

Period Number
7
📊

Block
s block
📊

Element Family
Alkaline Earth
📊

CAS Number
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 %
📊

Abundance In Oceans
0.00 %
📊

Abundance In Humans
0.00 %
📊

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

Melting Point
700.00 °C
59
📊

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
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Speed of Sound
Not Available
📊

Optical Properties

Refractive Index
Not Available
📊

Reflectivity
Not Available
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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
📊

Electronegativity

Pauling Electronegativity
0.90
📊

Sanderson Electronegativity
Not Available
📊

Allred Rochow Electronegativity
0.97
📊

Mulliken-Jaffe Electronegativity
0.92
📊

Allen Electronegativity
0.89
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Electropositivity

Pauling Electropositivity
3.10
📊

Ionization Energies

1st Energy Level
509.30 kJ/mol
📊

2nd Energy Level
979.00 kJ/mol
📊

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
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Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity

Atomic Properties of Radium

Atomic Number
88
30
📊

Electron Configuration
[Rn] 7s2

Crystal Structure
Body Centered Cubic (BCC)
📊

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

Atom of Radium

Number of Protons
88
📊

Number of Neutrons
138
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Number of Electrons
88
📊

Radius of an Atom

Atomic Radius
Not Available
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Covalent Radius
221.00 pm
📊

Van der Waals Radius
283.00 pm
📊

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
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Lattice Angles
π/2, π/2, π/2

Lattice C/A Ratio
Not Available
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Mechanical Properties of Radium

Density of Radium

Density At Room Temperature
5.50 g/cm3
📊

Density When Liquid (at m.p.)
Not Available
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Tensile Strength
Not Available
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Viscosity
Not Available
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Vapor Pressure of Radium

Vapor Pressure at 1000 K
Not Available
📊

Vapor Pressure at 2000 K
Not Available
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Elasticity properties

Shear Modulus
Not Available
📊

Bulk Modulus
Not Available
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Young's Modulus
Not Available
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Poisson Ratio
Not Available
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Other Mechanical Properties
NA

Magnetic Properties of Radium

Magnetic Characteristics of Radium

Specific Gravity
5.00
📊

Magnetic Ordering
Nonmagnetic
📊

Permeability
Not Available
📊

Susceptibility
Not Available
📊

Electrical Properties

Electrical Property
NA
📊

Resistivity
100.00 nΩ·m
📊

Electrical Conductivity
Not Available
📊

Electron Affinity
Not Available
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Thermal Properties of Radium

Specific Heat
0.12 J/(kg K)
40
📊

Molar Heat Capacity
Not Available
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Thermal Conductivity
18.60 W/m·K
45
📊

Critical Temperature
Not Available

Thermal Expansion
Not Available
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Enthalpy of Radium

Enthalpy of Vaporization
Not Available
📊

Enthalpy of Fusion
Not Available
📊

Enthalpy of Atomization
163.00 kJ/mol
📊

Standard Molar Entropy
71.00 J/mol.K
14
📊

Radium Metal

Metals have been an inseparable component of major civilizations since centuries. Although metals were utilized since time unknown, researchers put considerable efforts in giving them appropriate names and defining their different properties and characteristics. This nomenclature process helped in arranging these metals in a well-organized fashion, known as the periodic table. In this periodic table, Radium metal is also represented by the symbol Ra. This atomic symbol of Radium is useful in indicating the position of metal Ra in the periodic table. If you are curious-headed or a science-geek, the common questions about metals are What is Radium? What are its physical, chemical, mechanical, electrical and thermal properties? Find all the relevant facts about Ra metals in the following sections.

Periodic Table of Radium

Periodic table of Radium comments over its position in the periodic table, on the basis of parameters like group number, period row, atomic number and orbital block. The metals which have electrons falling in the same sub-shell are grouped under the same block corresponding to its respective orbital. Radium metal belongs to Alkaline Earth Metals category of the periodic table. Metals down a group have same valency while metals across a period have the same number of shells. Its group number (column number) is 2, whereas its period number is 7. It is placed under s block of the periodic table & is one of the prominent s block elements.

Radium Metal Properties

Metals have certain properties by which they can be distinguished from one another. Magnetic and Atomic Structure of Radium are few widely searched properties. Using the comparison facility, you can not only view the individual metal properties, but also compare the properties of multiple metals to get a thorough comparative analysis between the metals of your choice. Atomic number is a basic building block for the arrangement of metals in the periodic table. Atomic number of Radium is 88 and its atomic weight is 226.00 amu. The electrons in its atom are arranged in orbitals as [Rn] 7s2. Nuclear particles in Radium atom are 138 neutrons, 88 protons and 88 electrons.

Physical and Chemical Characteristics of Radium

Physical and chemical characteristics of Radium are two major criteria while comparing this metal with other metals. Physical Properties of Radium include its external appearance, shininess at surface, color, etc. Properties like density, viscosity, melting and boiling point are also covered in this section. At room temperature, this metal is a Silvery White Solid. It starts melting at 700.00 °C. All these Radium metal properties together define what is Radium?

Modern Periodic Table

Modern Periodic Table
Group →

Period ↓

1

2

3

4

5

6

7

1

H

2

3

La-Lu
Ac-Lr

4

5

6

7

8

9

10

11

12

13

B

14

C
Si
Ge

15

N
P
As
Sb

16

O
S
Se
Te

17

F
Cl
Br
I
At

18

He
Ne
Ar
Kr
Xe
Rn
Og