Symbol
Ba
Group Number
2
Rank: 16 (Overall)
0
17
👆🏻
Period Number
6
Rank: 2 (Overall)
2
7
👆🏻
Block
s block
Element Family
Alkaline Earth
CAS Number
7440393
Rank: 45 (Overall)
7429905
54386242
👆🏻
Space Group Name
Im_ 3m
Space Group Number
229.00
Rank: 2 (Overall)
11
276
👆🏻
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.
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
History
Who Discovered
Carl Wilhelm Scheele
Discovery
In 1772
Abundance
Abundance In Universe
0.00 %
Rank: 17 (Overall)
0
0.11
👆🏻
Abundance In Sun
0.00 %
Rank: 18 (Overall)
0
0.1
👆🏻
Abundance In Meteorites
0.00 %
Rank: 20 (Overall)
0
22
👆🏻
Abundance In Earth's Crust
0.03 %
Rank: 11 (Overall)
1E-37
8.1
👆🏻
Abundance In Oceans
0.00 %
Rank: 8 (Overall)
0
1.1
👆🏻
Abundance In Humans
0.00 %
Rank: 13 (Overall)
0
1.4
👆🏻
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.
Industrial Uses
Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry
Medical Uses
-
Other Uses
Alloys
Biological Properties
Toxicity
Low Toxic
Present in Human Body
✔
✘
83% - Alkaline Earth Metals Metals have it !
In Blood
0.07 Blood/mg dm-3
Rank: 15 (Overall)
0
1970
👆🏻
In Bone
70.00 p.p.m.
Rank: 9 (Overall)
0
170000
👆🏻
Melting Point
725.00 °C
Rank: 58 (Overall)
-38.83
3410
👆🏻
Boiling Point
1,140.00 °C
Rank: 66 (Overall)
0
5660
👆🏻
Appearance
Physical State
Solid
Color
Silvery Gray
Luster
-
Hardness
Mohs Hardness
1.25
Rank: 20 (Overall)
0.2
8.5
👆🏻
Brinell Hardness
130.00 MPa
Rank: 57 (Overall)
0.14
3490
👆🏻
Vickers Hardness
210.00 MPa
Rank: 52 (Overall)
0
3920
👆🏻
Speed of Sound
1,620.00 m/s
Rank: 65 (Overall)
818
16200
👆🏻
Optical Properties
Refractive Index
1.47
Rank: 38 (Overall)
0.155
3.41
👆🏻
Reflectivity
65.00 %
Rank: 18 (Overall)
5
97
👆🏻
Allotropes
✔
✘
No - Alkaline Earth Metals Metals has it !
α Allotropes
-
β Allotropes
-
γ Allotropes
-
Chemical Formula
Ba
Isotopes
Known Isotopes
37
Rank: 2 (Overall)
0
38
👆🏻
Electronegativity
Pauling Electronegativity
0.89
Rank: 51 (Overall)
0
2.6
👆🏻
Sanderson Electronegativity
0.68
Rank: 48 (Overall)
0.22
2.56
👆🏻
Allred Rochow Electronegativity
0.97
Rank: 39 (Overall)
0.86
1.9
👆🏻
Mulliken-Jaffe Electronegativity
0.88
Rank: 51 (Overall)
0.62
2.48
👆🏻
Allen Electronegativity
0.88
Rank: 61 (Overall)
0.659
2.7
👆🏻
Electropositivity
Pauling Electropositivity
3.11
Rank: 4 (Overall)
1.46
3.3
👆🏻
Ionization Energies
1st Energy Level
502.90 kJ/mol
Rank: 83 (Overall)
375.7
26130
👆🏻
2nd Energy Level
965.20 kJ/mol
Rank: 83 (Overall)
392.8
28750
👆🏻
3rd Energy Level
3,600.00 kJ/mol
Rank: 14 (Overall)
392.8
34230
👆🏻
4th Energy Level
502.90 kJ/mol
Rank: 85 (Overall)
375.7
37066
👆🏻
5th Energy Level
5,020.00 kJ/mol
Rank: 74 (Overall)
392
97510
👆🏻
6th Energy Level
5,020.00 kJ/mol
Rank: 86 (Overall)
1007
105800
👆🏻
7th Energy level
5,020.00 kJ/mol
Rank: 78 (Overall)
1007
114300
👆🏻
8th Energy Level
5,020.00 kJ/mol
Rank: 76 (Overall)
730
125300
👆🏻
9th Energy Level
5,020.00 kJ/mol
Rank: 77 (Overall)
1007
134700
👆🏻
10th Energy Level
5,020.00 kJ/mol
Rank: 74 (Overall)
392
144300
👆🏻
11th Energy Level
5,020.00 kJ/mol
Rank: 79 (Overall)
392
169988
👆🏻
12th Energy Level
5,020.00 kJ/mol
Rank: 82 (Overall)
0
189368
👆🏻
13th Energy Level
5,020.00 kJ/mol
Rank: 72 (Overall)
1007
76015
👆🏻
14th Energy Level
5,020.00 kJ/mol
Rank: 56 (Overall)
380
86450
👆🏻
15th Energy Level
50,200.00 kJ/mol
Rank: 72 (Overall)
33000
100700
👆🏻
16th Energy Level
50,270.00 kJ/mol
Rank: 58 (Overall)
375.7
109480
👆🏻
17th Energy Level
502.90 kJ/mol
Rank: 87 (Overall)
375.7
122200
👆🏻
18th Energy Level
5,020.00 kJ/mol
Rank: 72 (Overall)
0
134810
👆🏻
19th Energy Level
502.90 kJ/mol
Rank: 86 (Overall)
375.7
148700
👆🏻
20th Energy Level
502.00 kJ/mol
Rank: 76 (Overall)
0
171200
👆🏻
21st Energy Level
502.90 kJ/mol
Rank: 86 (Overall)
375.7
179100
👆🏻
22nd Energy Level
502.00 kJ/mol
Rank: 70 (Overall)
330
184900
👆🏻
23rd Energy Level
502.90 kJ/mol
Rank: 82 (Overall)
357.6
198800
👆🏻
24th Energy Level
502.90 kJ/mol
Rank: 82 (Overall)
297.3
195200
👆🏻
25th Energy Level
503.00 kJ/mol
Rank: 74 (Overall)
0
121900
👆🏻
26th Energy Level
502.90 kJ/mol
Rank: 82 (Overall)
357.6
127700
👆🏻
27th Energy Level
502.90 kJ/mol
Rank: 77 (Overall)
0
133800
👆🏻
28th Energy Level
502.90 kJ/mol
Rank: 80 (Overall)
297.3
139800
👆🏻
29th Energy Level
502.90 kJ/mol
Rank: 83 (Overall)
0
148100
👆🏻
30th Energy Level
503.00 kJ/mol
Rank: 77 (Overall)
0
154500
👆🏻
Electrochemical Equivalent
2.56 g/amp-hr
Rank: 24 (Overall)
0.16812
8.3209
👆🏻
Electron Work Function
2.70 eV
Rank: 52 (Overall)
2.14
6
👆🏻
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Atomic Number
56
Rank: 60 (Overall)
3
117
👆🏻
Electron Configuration
[Xe] 6s2
Crystal Structure
Body Centered Cubic (BCC)
Crystal Lattice
Atom
Number of Protons
56
Rank: 59 (Overall)
3
117
👆🏻
Number of Neutrons
81
Rank: 43 (Overall)
4
285
👆🏻
Number of Electrons
56
Rank: 59 (Overall)
3
117
👆🏻
Radius of an Atom
Atomic Radius
222.00 pm
Rank: 5 (Overall)
0
348
👆🏻
Covalent Radius
215.00 pm
Rank: 5 (Overall)
0
260
👆🏻
Van der Waals Radius
268.00 pm
Rank: 8 (Overall)
0
348
👆🏻
Atomic Weight
137.33 amu
Rank: 54 (Overall)
6.94
294
👆🏻
Atomic Volume
39.24 cm3/mol
Rank: 6 (Overall)
1.39
71.07
👆🏻
Adjacent Atomic Numbers
Previous Element
Next Element
Valence Electron Potential
21.30 (-eV)
Rank: 61 (Overall)
0
392.42
👆🏻
Lattice Constant
502.80 pm
Rank: 17 (Overall)
0
891.25
👆🏻
Lattice Angles
π/2, π/2, π/2
Lattice C/A Ratio
1.57
Rank: 41 (Overall)
0.423
1.9
👆🏻
Density
Density At Room Temperature
3.51 g/cm3
Rank: 77 (Overall)
0.534
40.7
👆🏻
Density When Liquid (at m.p.)
3.34 g/cm3
Rank: 79 (Overall)
0.512
41
👆🏻
Tensile Strength
55.00 MPa
Rank: 37 (Overall)
0.1
11000
👆🏻
Viscosity
0.00
Rank: 2 (Overall)
1.5E-05
0.0035
👆🏻
Vapor Pressure
Vapor Pressure at 1000 K
7.11 (Pa)
Rank: 6 (Overall)
0
121
👆🏻
Vapor Pressure at 2000 K
0.00 (Pa)
Rank: 30 (Overall)
0
774
👆🏻
Elasticity properties
Shear Modulus
4.90 GPa
Rank: 60 (Overall)
1.3
222
👆🏻
Bulk Modulus
9.60 GPa
Rank: 59 (Overall)
0
462
👆🏻
Young's Modulus
13.00 GPa
Rank: 56 (Overall)
0
528
👆🏻
Poisson Ratio
0.22
Rank: 31 (Overall)
0.032
0.47
👆🏻
Other Mechanical Properties
-
Magnetic Characteristics
Specific Gravity
3.62
Rank: 76 (Overall)
0.53
4500
👆🏻
Magnetic Ordering
Paramagnetic
Permeability
0.00 H/m
Rank: 15 (Overall)
1.25643E-06
0.0063
👆🏻
Susceptibility
0.00
Rank: 24 (Overall)
-0.000166
200000
👆🏻
Electrical Properties
Electrical Property
Superconductor
Resistivity
332.00 nΩ·m
Rank: 13 (Overall)
0.1
961
👆🏻
Electrical Conductivity
0.03 106/cm Ω
Rank: 45 (Overall)
0
0.63
👆🏻
Electron Affinity
13.95 kJ/mol
Rank: 42 (Overall)
0
222.8
👆🏻
Specific Heat
0.20 J/(kg K)
Rank: 31 (Overall)
0.1
3.6
👆🏻
Molar Heat Capacity
28.07 J/mol·K
Rank: 15 (Overall)
13.1
62.7
👆🏻
Thermal Conductivity
18.40 W/m·K
Rank: 47 (Overall)
0
429
👆🏻
Critical Temperature
1,000.00 K
Rank: 60 (Overall)
26.3
3695
👆🏻
Thermal Expansion
20.60 µm/(m·K)
Rank: 24 (Overall)
4.5
97
👆🏻
Enthalpy
Enthalpy of Vaporization
140.00 kJ/mol
Rank: 71 (Overall)
7.32
799.1
👆🏻
Enthalpy of Fusion
7.66 kJ/mol
Rank: 49 (Overall)
2.1
35.23
👆🏻
Enthalpy of Atomization
175.70 kJ/mol
Rank: 61 (Overall)
61.5
837
👆🏻
Standard Molar Entropy
62.50 J/mol.K
Rank: 25 (Overall)
9.5
198.1
👆🏻