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Barium Fermium Comparison

Barium
Fermium
Fermium Barium comparison


Periodic Table
Symbol
Ba  
Fm  
Group Number
2  
16
3  
15
Period Number
6  
7  
Block
s block  
f block  
Element Family
Alkaline Earth  
Actinide  
CAS Number
7440393  
99+
7440724  
19
Space Group Name
Im_ 3m  
-  
Space Group Number
229.00  
2
194.00  
7
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.
  
  • Fermium metal is highly radioactive in nature.
  • Fermium is synthetically produced metal.
  
Sources
Earth's crust, Found in Minerals, Mining, Ores of Minerals  
Bombarding Pu-239 with Neutrons  
History
  
  
Who Discovered
Carl Wilhelm Scheele  
Lawrence Berkeley National Laboratory  
Discovery
In 1772  
In 1952  
Abundance
  
  
Abundance In Universe
0.00 %  
17
0.00 %  
35
Abundance In Sun
0.00 %  
18
0.00 %  
30
Abundance In Meteorites
0.00 %  
20
0.00 %  
99+
Abundance In Earth's Crust
0.03 %  
11
0.00 %  
99+
Abundance In Oceans
0.00 %  
8
-  
Abundance In Humans
0.00 %  
13
-  
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.
  
  • Currently known uses of Fermium metal are limited to research purpose only.
  
Industrial Uses
Ammunition Industry, Automobile Industry, Electrical Industry, Electronic Industry  
-  
Medical Uses
-  
-  
Other Uses
Alloys  
-  
Biological Properties
  
  
Toxicity
Low Toxic  
-  
Present in Human Body
Yes  
No  
In Blood
0.07 Blood/mg dm-3  
15
0.00 Blood/mg dm-3  
40
In Bone
70.00 p.p.m.  
9
0.00 p.p.m.  
99+
Physical
Melting Point
725.00 °C  
99+
1,527.00 °C  
26
Boiling Point
1,140.00 °C  
99+
0.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Gray  
-  
Luster
-  
-  
Hardness
  
  
Mohs Hardness
1.25  
20
6.00  
6
Brinell Hardness
130.00 MPa  
99+
500.00 MPa  
28
Vickers Hardness
210.00 MPa  
99+
600.00 MPa  
28
Speed of Sound
1,620.00 m/s  
99+
2,500.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.47  
38
1.30  
99+
Reflectivity
65.00 %  
18
59.00 %  
24
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ba  
Fm  
Isotopes
  
  
Known Isotopes
37  
2
18  
21
Electronegativity
  
  
Pauling Electronegativity
0.89  
99+
1.30  
33
Sanderson Electronegativity
0.68  
99+
1.30  
25
Allred Rochow Electronegativity
0.97  
39
1.20  
28
Mulliken-Jaffe Electronegativity
0.88  
99+
1.30  
33
Allen Electronegativity
0.88  
99+
1.30  
40
Electropositivity
  
  
Pauling Electropositivity
3.11  
4
2.70  
22
Ionization Energies
  
  
1st Energy Level
502.90 kJ/mol  
99+
627.00 kJ/mol  
99+
2nd Energy Level
965.20 kJ/mol  
99+
1,225.00 kJ/mol  
99+
3rd Energy Level
3,600.00 kJ/mol  
14
2,363.00 kJ/mol  
99+
4th Energy Level
502.90 kJ/mol  
99+
3,792.00 kJ/mol  
99+
5th Energy Level
5,020.00 kJ/mol  
99+
6,270.00 kJ/mol  
39
6th Energy Level
5,020.00 kJ/mol  
99+
6,270.00 kJ/mol  
99+
7th Energy level
5,020.00 kJ/mol  
99+
6,270.00 kJ/mol  
99+
8th Energy Level
5,020.00 kJ/mol  
99+
6,270.00 kJ/mol  
99+
9th Energy Level
5,020.00 kJ/mol  
99+
7,040.00 kJ/mol  
33
10th Energy Level
5,020.00 kJ/mol  
99+
6,270.00 kJ/mol  
99+
11th Energy Level
5,020.00 kJ/mol  
99+
6,270.00 kJ/mol  
99+
12th Energy Level
5,020.00 kJ/mol  
99+
62,700.00 kJ/mol  
10
13th Energy Level
5,020.00 kJ/mol  
99+
6,270.00 kJ/mol  
38
14th Energy Level
5,020.00 kJ/mol  
99+
6,270.00 kJ/mol  
27
15th Energy Level
50,200.00 kJ/mol  
99+
62,700.00 kJ/mol  
38
16th Energy Level
50,270.00 kJ/mol  
99+
62,700.00 kJ/mol  
28
17th Energy Level
502.90 kJ/mol  
99+
627.00 kJ/mol  
99+
18th Energy Level
5,020.00 kJ/mol  
99+
6,270.00 kJ/mol  
40
19th Energy Level
502.90 kJ/mol  
99+
994.80 kJ/mol  
21
20th Energy Level
502.00 kJ/mol  
99+
627.00 kJ/mol  
99+
21st Energy Level
502.90 kJ/mol  
99+
627.00 kJ/mol  
99+
22nd Energy Level
502.00 kJ/mol  
99+
345.00 kJ/mol  
99+
23rd Energy Level
502.90 kJ/mol  
99+
6,270.00 kJ/mol  
14
24th Energy Level
502.90 kJ/mol  
99+
627.60 kJ/mol  
38
25th Energy Level
503.00 kJ/mol  
99+
627.00 kJ/mol  
40
26th Energy Level
502.90 kJ/mol  
99+
627.60 kJ/mol  
39
27th Energy Level
502.90 kJ/mol  
99+
627.60 kJ/mol  
99+
28th Energy Level
502.90 kJ/mol  
99+
627.60 kJ/mol  
99+
29th Energy Level
502.90 kJ/mol  
99+
627.60 kJ/mol  
99+
30th Energy Level
503.00 kJ/mol  
99+
627.60 kJ/mol  
99+
Electrochemical Equivalent
2.56 g/amp-hr  
24
3.20 g/amp-hr  
15
Electron Work Function
2.70 eV  
99+
4.47 eV  
21
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
56  
99+
100  
18
Electron Configuration
[Xe] 6s2  
[Rn] 5f12 7s2  
Crystal Structure
Body Centered Cubic (BCC)  
Not Known  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
Unknown-Crystal-Structure-of-Fermium.jpg#100  
Atom
  
  
Number of Protons
56  
99+
100  
18
Number of Neutrons
81  
99+
157  
8
Number of Electrons
56  
99+
100  
18
Radius of an Atom
  
  
Atomic Radius
222.00 pm  
5
180.00 pm  
16
Covalent Radius
215.00 pm  
5
180.00 pm  
23
Van der Waals Radius
268.00 pm  
8
245.00 pm  
13
Atomic Weight
137.33 amu  
99+
257.00 amu  
15
Atomic Volume
39.24 cm3/mol  
6
18.00 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Cesium
  
Einsteinium
  
Next Element
Lanthanum
  
Mendelevium
  
Valence Electron Potential
21.30 (-eV)  
99+
0.00 (-eV)  
99+
Lattice Constant
502.80 pm  
17
350.00 pm  
99+
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.57  
99+
1.63  
13
Mechanical
Density
  
  
Density At Room Temperature
3.51 g/cm3  
99+
9.70 g/cm3  
99+
Density When Liquid (at m.p.)
3.34 g/cm3  
99+
9.70 g/cm3  
99+
Tensile Strength
55.00 MPa  
37
0.10 MPa  
99+
Viscosity
0.00  
2
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
7.11 (Pa)  
6
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
30
0.00 (Pa)  
30
Elasticity properties
  
  
Shear Modulus
4.90 GPa  
99+
30.00 GPa  
27
Bulk Modulus
9.60 GPa  
99+
50.00 GPa  
24
Young's Modulus
13.00 GPa  
99+
0.00 GPa  
99+
Poisson Ratio
0.22  
31
0.35  
9
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
3.62  
99+
9.70  
99+
Magnetic Ordering
Paramagnetic  
-  
Permeability
0.00 H/m  
15
0.00 H/m  
16
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
Superconductor  
-  
Resistivity
332.00 nΩ·m  
13
7.90 nΩ·m  
99+
Electrical Conductivity
0.03 106/cm Ω  
99+
0.00 106/cm Ω  
99+
Electron Affinity
13.95 kJ/mol  
99+
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.20 J/(kg K)  
31
0.10 J/(kg K)  
99+
Molar Heat Capacity
28.07 J/mol·K  
15
27.00 J/mol·K  
29
Thermal Conductivity
18.40 W/m·K  
99+
0.00 W/m·K  
99+
Critical Temperature
1,000.00 K  
99+
1,323.00 K  
99+
Thermal Expansion
20.60 µm/(m·K)  
24
11.00 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
140.00 kJ/mol  
99+
319.20 kJ/mol  
99+
Enthalpy of Fusion
7.66 kJ/mol  
99+
13.30 kJ/mol  
30
Enthalpy of Atomization
175.70 kJ/mol  
99+
-  
Standard Molar Entropy
62.50 J/mol.K  
25
50.00 J/mol.K  
99+
Summary >>
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