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Barium
Barium

Curium
Curium



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Barium
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Curium

Barium Curium Comparison

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1 Periodic Table
1.1 Symbol
Ba
Cm
1.2 Group Number
2NA
Gadolinium Metal
0 17
1.7 Period Number
67
Lithium Metal
2 7
1.8 Block
s block
f block
1.9 Element Family
Alkaline Earth
Actinide
1.10 CAS Number
74403937440519
Aluminium Metal
7429905 54386242
1.11 Space Group Name
Im_ 3m
Not Available
1.12 Space Group Number
229.00NA
Plutonium Metal
11 229
2 Facts
2.1 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.
  • Curium metal does not occur free in nature.
  • Curium metal is a synthetically produced metal.
2.2 Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals
Bombarding Plutonium with Helium Ions
2.3 History
2.3.1 Who Discovered
Carl Wilhelm Scheele
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso
2.3.2 Discovery
In 1772
In 1944
2.4 Abundance
2.4.1 Abundance In Universe
1 * 10-6 %NA
Thallium Metal
5E-09 0.11
2.5.2 Abundance In Sun
~0.000001 %~-9999 %
Beryllium Metal
1E-08 0.1
2.5.3 Abundance In Meteorites
0.00 %NA
Gold Metal
1.7E-07 22
2.8.3 Abundance In Earth's Crust
0.03 %NA
Radium Metal
9.9E-12 8.1
2.9.1 Abundance In Oceans
0.00 %NA
Protactinium Metal
2E-23 1.1
2.11.1 Abundance In Humans
0.00 %NA
Radium Metal
1E-13 1.4
4 Uses
4.1 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.
  • Curium metal is used to provide power to electrical equipment for space missions.
4.1.1 Industrial Uses
Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry
NA
4.1.2 Medical Uses
NA
NA
4.1.4 Other Uses
Alloys
Research Purposes
4.2 Biological Properties
4.2.1 Toxicity
Low Toxic
Unknown
4.2.2 Present in Human Body
4.2.3 In Blood
0.07 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium Metal
0 1970
4.2.6 In Bone
70.00 p.p.m.0.00 p.p.m.
Plutonium Metal
0 170000
5 Physical
5.1 Melting Point
725.00 °C1,340.00 °C
Francium Metal
27 3410
5.3 Boiling Point
1,140.00 °C3,110.00 °C
Flerovium Metal
147 5660
5.7 Appearance
5.7.1 Physical State
Solid
Solid
5.7.2 Color
Silvery Gray
Silver
5.7.3 Luster
NA
Metallic
5.8 Hardness
5.8.1 Mohs Hardness
1.25NA
Cesium Metal
0.2 8.5
5.8.4 Brinell Hardness
NANA
Cesium Metal
0.14 3490
5.11.2 Vickers Hardness
NANA
Palladium Metal
121 3430
5.12 Speed of Sound
1,620.00 m/sNA
Thallium Metal
818 16200
5.14 Optical Properties
5.14.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
5.14.4 Reflectivity
NANA
Molybdenum Metal
58 97
5.15 Allotropes
5.15.1 α Allotropes
Not Available
Not Available
5.15.2 β Allotropes
Not Available
Not Available
5.15.3 γ Allotropes
Not Available
Not Available
6 Chemical
6.1 Chemical Formula
Ba
Cm
6.2 Isotopes
6.2.1 Known Isotopes
3715
Tennessine Metal
0 38
6.6 Electronegativity
6.6.1 Pauling Electronegativity
0.891.30
Francium Metal
0.7 2.54
8.1.3 Sanderson Electronegativity
0.68NA
Cesium Metal
0.22 2.56
8.2.1 Allred Rochow Electronegativity
0.971.20
Cesium Metal
0.86 1.82
8.2.4 Mulliken-Jaffe Electronegativity
0.88NA
Cesium Metal
0.62 2.48
8.3.3 Allen Electronegativity
0.88NA
Cesium Metal
0.659 2.7
8.6 Electropositivity
8.6.1 Pauling Electropositivity
3.112.70
Gold Metal
1.46 3.3
8.7 Ionization Energies
8.7.1 1st Energy Level
502.90 kJ/mol581.00 kJ/mol
Cesium Metal
375.7 26130
8.8.1 2nd Energy Level
965.20 kJ/mol1,196.00 kJ/mol
Ruthenium Metal
710.2162 28750
10.2.2 3rd Energy Level
3,600.00 kJ/mol2,026.00 kJ/mol
Osmium Metal
1600 34230
10.2.3 4th Energy Level
NA3,550.00 kJ/mol
Thorium Metal
2780 37066
10.4.1 5th Energy Level
NANA
Dubnium Metal
4305.2 97510
10.7.1 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
10.8.2 7th Energy level
NANA
Bohrium Metal
7226.8 114300
10.9.1 8th Energy Level
NANA
Hassium Metal
8857.4 125300
10.10.1 9th Energy Level
NANA
Yttrium Metal
14110 134700
10.11.2 10th Energy Level
NANA
Strontium Metal
17100 144300
10.11.6 11th Energy Level
NANA
Yttrium Metal
19900 169988
10.13.2 12th Energy Level
NANA
Molybdenum Metal
22219 189368
11.2.4 13th Energy Level
NANA
Molybdenum Metal
26930 76015
11.2.7 14th Energy Level
NANA
Molybdenum Metal
29196 86450
11.4.3 15th Energy Level
NANA
Manganese Metal
41987 97510
11.4.4 16th Energy Level
NANA
Iron Metal
47206 109480
11.5.2 17th Energy Level
NANA
Cobalt Metal
52737 122200
11.7.1 18th Energy Level
NANA
Nickel Metal
58570 134810
12.1.1 19th Energy Level
NANA
Copper Metal
64702 148700
12.3.1 20th Energy Level
NANA
Molybdenum Metal
80400 171200
12.6.1 21st Energy Level
NANA
Molybdenum Metal
87000 179100
12.8.1 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
13.1.2 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
13.2.3 24th Energy Level
NANA
Molybdenum Metal
104400 195200
13.2.6 25th Energy Level
NANA
Molybdenum Metal
121900 121900
13.2.7 26th Energy Level
NANA
Molybdenum Metal
127700 127700
13.4.1 27th Energy Level
NANA
Molybdenum Metal
133800 133800
13.4.2 28th Energy Level
NANA
Molybdenum Metal
139800 139800
13.5.1 29th Energy Level
NANA
Molybdenum Metal
148100 148100
13.6.2 30th Energy Level
NANA
Molybdenum Metal
154500 154500
13.7 Electrochemical Equivalent
2.56 g/amp-hr3.07 g/amp-hr
Beryllium Metal
0.16812 8.3209
13.9 Electron Work Function
2.70 eVNA
Cesium Metal
2.14 5.65
13.10 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes
14 Atomic
14.1 Atomic Number
5696
Lithium Metal
3 117
14.2 Electron Configuration
[Xe] 6s2
[Rn] 5f7 6d1 7s2
14.3 Crystal Structure
Body Centered Cubic (BCC)
Double Hexagonal Close Packed (DHCP)
14.3.1 Crystal Lattice
14.4 Atom
14.4.1 Number of Protons
5696
Lithium Metal
3 117
14.4.3 Number of Neutrons
81151
Lithium Metal
4 184
14.5.1 Number of Electrons
5696
Lithium Metal
3 117
15.2 Radius of an Atom
15.2.1 Atomic Radius
222.00 pm174.00 pm
Beryllium Metal
112 265
15.2.4 Covalent Radius
215.00 pm169.00 pm
Beryllium Metal
96 260
15.2.6 Van der Waals Radius
268.00 pm200.00 pm
Zinc Metal
139 348
15.4 Atomic Weight
137.33 amu247.00 amu
Lithium Metal
6.94 294
15.5 Atomic Volume
39.24 cm3/mol18.28 cm3/mol
Manganese Metal
1.39 71.07
15.6 Adjacent Atomic Numbers
15.6.1 Previous Element
15.6.2 Next Element
15.7 Valence Electron Potential
21.30 (-eV)44.50 (-eV)
Francium Metal
8 392.42
15.8 Lattice Constant
502.80 pmNA
Beryllium Metal
228.58 891.25
16.2 Lattice Angles
π/2, π/2, π/2
NA
16.3 Lattice C/A Ratio
NANA
Beryllium Metal
1.567 1.886
17 Mechanical
17.1 Density
17.1.1 Density At Room Temperature
3.51 g/cm313.51 g/cm3
Lithium Metal
0.534 40.7
17.2.1 Density When Liquid (at m.p.)
3.34 g/cm313.85 g/cm3
Lithium Metal
0.512 20
17.4 Tensile Strength
NANA
Indium Metal
2.5 11000
17.6 Viscosity
NANA
Mercury Metal
0.001526 0.001526
17.7 Vapor Pressure
17.7.1 Vapor Pressure at 1000 K
7.11 (Pa)NA
Cerium Metal
2.47E-11 121
17.8.1 Vapor Pressure at 2000 K
NANA
Tungsten Metal
2.62E-10 774
17.10 Elasticity properties
17.10.1 Shear Modulus
4.90 GPaNA
Potassium Metal
1.3 222
17.10.3 Bulk Modulus
9.60 GPaNA
Cesium Metal
1.6 462
17.10.5 Young's Modulus
13.00 GPaNA
Cesium Metal
1.7 528
17.12 Poisson Ratio
NANA
Beryllium Metal
0.032 0.47
17.13 Other Mechanical Properties
NA
Unknown
18 Magnetic
18.1 Magnetic Characteristics
18.1.1 Specific Gravity
3.6213.51
Lithium Metal
0.53 4500
18.1.2 Magnetic Ordering
Paramagnetic
Antiferromagnetic
18.1.3 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
18.1.4 Susceptibility
NANA
Bismuth Metal
-0.000166 200000
18.2 Electrical Properties
18.2.1 Electrical Property
Superconductor
Unknown
18.2.2 Resistivity
332.00 nΩ·m1.25 nΩ·m
Thallium Metal
0.18 961
18.2.3 Electrical Conductivity
0.03 106/cm ΩNA
Plutonium Metal
0.00666 0.63
18.2.4 Electron Affinity
13.95 kJ/molNA
Mercury Metal
0 222.8
19 Thermal
19.1 Specific Heat
0.20 J/(kg K)NA
Americium Metal
0.11 3.6
19.2 Molar Heat Capacity
28.07 J/mol·KNA
Beryllium Metal
16.443 62.7
19.3 Thermal Conductivity
18.40 W/m·KNA
Neptunium Metal
6.3 429
19.4 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
19.5 Thermal Expansion
20.60 µm/(m·K)NA
Tungsten Metal
4.5 97
19.6 Enthalpy
19.6.1 Enthalpy of Vaporization
140.00 kJ/molNA
Zinc Metal
7.32 799.1
19.6.2 Enthalpy of Fusion
7.66 kJ/mol15.00 kJ/mol
Cesium Metal
2.1 35.23
19.6.3 Enthalpy of Atomization
175.70 kJ/molNA
Mercury Metal
61.5 837
19.7 Standard Molar Entropy
62.50 J/mol.KNA
Beryllium Metal
9.5 198.1