Barium vs Uranium
Periodic Table
Symbol
Ba
U
Group Number
2
16
0
18
Period Number
6
7
Block
s block
f block
Element Family
Alkaline Earth
Actinide
CAS Number
7440393
99+
7440611
28
Space Group Name
Im_ 3m
Cmcm
Space Group Number
229.00
1
63.00
10
Facts
Interesting Facts
- Barium oxidizes very easily in the air.
- All toxic compounds of Barium can easily dissolve in water.
- Barium carbonate is used to produce a Rat poison and its other compound Barium nitrate is used in fireworks to produce green color.
- Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
Earth's crust, Mining, Ores of Minerals
History
Who Discovered
Carl Wilhelm Scheele
Not Available
Discovery
In 1772
In 1789
Abundance
Abundance In Universe
1 * 10-6 %
16
2 * 10-8 %
29
Abundance In Sun
~0.000001 %
18
~0.0000001 %
26
Abundance In Meteorites
0.00 %
20
0.00 %
99+
Abundance In Earth's Crust
0.03 %
11
0.00 %
36
Abundance In Oceans
0.00 %
8
0.00 %
11
Abundance In Humans
0.00 %
12
Not Available
Uses
Uses & Benefits
- It is sued in chemical paint manufacturing and glass manufacturing.
- Compounds of this metal are toxic; but still the barium sulfate is insoluble and given to patients suffering from digestive disorder.
- The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
- Synthetic elements like transuranium are made from Uranium metal.
Industrial Uses
Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry
Ammunition Industry, Chemical Industry
Medical Uses
NA
NA
Other Uses
Alloys
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues
Biological Properties
Toxicity
Low Toxic
Toxic
Present in Human Body
Yes
No
In Blood
0.07 Blood/mg dm-3
15
Not Available
In Bone
70.00 p.p.m.
9
Not Available
Physical Properties
Melting Point
725.00 °C
99+
1,132.00 °C
39
Boiling Point
1,140.00 °C
99+
3,818.00 °C
16
Appearance
Physical State
Solid
Solid
Color
Silvery Gray
Silvery Gray
Luster
NA
Metallic
Hardness
Mohs Hardness
1.25
19
6.00
6
Brinell Hardness
Not Available
2,350.00 MPa
2
Vickers Hardness
Not Available
1,960.00 MPa
2
Speed of Sound
1,620.00 m/s
99+
3,155.00 m/s
25
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
Ba
U
Isotopes
Known Isotopes
37
2
25
14
Electronegativity
Pauling Electronegativity
0.89
99+
1.38
28
Sanderson Electronegativity
0.68
28
Not Available
Allred Rochow Electronegativity
0.97
38
1.22
26
Mulliken-Jaffe Electronegativity
0.88
22
Not Available
Allen Electronegativity
0.88
99+
Not Available
Electropositivity
Pauling Electropositivity
3.11
4
2.62
26
Ionization Energies
1st Energy Level
502.90 kJ/mol
99+
597.60 kJ/mol
99+
2nd Energy Level
965.20 kJ/mol
99+
1,420.00 kJ/mol
99+
3rd Energy Level
3,600.00 kJ/mol
14
1,900.00 kJ/mol
99+
4th Energy Level
Not Available
3,145.00 kJ/mol
99+
Electrochemical Equivalent
2.56 g/amp-hr
20
1.48 g/amp-hr
99+
Electron Work Function
2.70 eV
99+
3.63 eV
30
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes, Radioactivity
Atomic Properties
Atomic Number
56
99+
92
26
Electron Configuration
[Xe] 6s2
[Rn] 5f3 6d1 7s2
Crystal Structure
Body Centered Cubic (BCC)
Orthorhombic (ORTH)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
ORTH-Crystal-Structure-of-Uranium.jpg#100
Atom
Number of Protons
56
99+
92
26
Number of Neutrons
81
99+
146
13
Number of Electrons
56
99+
92
26
Radius of an Atom
Atomic Radius
222.00 pm
4
156.00 pm
29
Covalent Radius
215.00 pm
5
196.00 pm
14
Van der Waals Radius
268.00 pm
6
186.00 pm
33
Atomic Weight
137.33 amu
99+
238.03 amu
21
Atomic Volume
39.24 cm3/mol
5
12.59 cm3/mol
40
Adjacent Atomic Numbers
Valence Electron Potential
21.30 (-eV)
99+
170.00 (-eV)
4
Lattice Constant
502.80 pm
15
295.08 pm
99+
Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
Mechanical Properties
Density
Density At Room Temperature
3.51 g/cm3
99+
19.10 g/cm3
17
Density When Liquid (at m.p.)
3.34 g/cm3
99+
17.30 g/cm3
7
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 1000 K
7.11 (Pa)
6
Not Available
Vapor Pressure at 2000 K
Not Available
0.01 (Pa)
20
Elasticity properties
Shear Modulus
4.90 GPa
99+
111.00 GPa
10
Bulk Modulus
9.60 GPa
99+
100.00 GPa
16
Young's Modulus
13.00 GPa
99+
208.00 GPa
10
Poisson Ratio
Not Available
0.23
30
Other Mechanical Properties
NA
Ductile, Malleable
Magnetic Properties
Magnetic Characteristics
Specific Gravity
3.62
99+
18.80
10
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Properties
Electrical Property
Superconductor
Poor Conductor
Resistivity
332.00 nΩ·m
13
0.28 nΩ·m
99+
Electrical Conductivity
0.03 106/cm Ω
40
0.04 106/cm Ω
37
Electron Affinity
13.95 kJ/mol
36
Not Available
Thermal Properties
Specific Heat
0.20 J/(kg K)
30
0.12 J/(kg K)
40
Molar Heat Capacity
28.07 J/mol·K
12
27.67 J/mol·K
15
Thermal Conductivity
18.40 W/m·K
99+
27.50 W/m·K
40
Critical Temperature
Not Available
Not Available
Thermal Expansion
20.60 µm/(m·K)
22
13.90 µm/(m·K)
27
Enthalpy
Enthalpy of Vaporization
140.00 kJ/mol
99+
477.00 kJ/mol
13
Enthalpy of Fusion
7.66 kJ/mol
99+
15.48 kJ/mol
19
Enthalpy of Atomization
175.70 kJ/mol
99+
489.50 kJ/mol
14
Standard Molar Entropy
62.50 J/mol.K
20
50.20 J/mol.K
31
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