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Samarium
Samarium

Silver
Silver



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Samarium
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Silver

Samarium Silver Comparison

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1 Periodic Table
1.1 Symbol
Sm
Ag
1.2 Group Number
NA11
Gadolinium Metal
0 17
1.5 Period Number
65
Lithium Metal
2 7
1.9 Block
f block
d block
1.10 Element Family
Lanthanide
Transition Metal
1.11 CAS Number
74401997440224
Aluminium Metal
7429905 54386242
1.13 Space Group Name
R_ 3m
Fm_ 3m
1.15 Space Group Number
166.00225.00
Plutonium Metal
11 229
2 Facts
2.1 Interesting Facts
  • Samarium metals helps stimulating body metabolism.
  • Samarium metals was 1st observed by Jean Charles Galissard de Marignac in Dydimia in 1853.
  • It is the most reflective element.
  • Silver is the second most ductile metal after Gold.
  • It is also used in Dentistry as a dental alloys for clips and crowning.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
Earth's crust, Found in Minerals, Ores of metals
2.3 History
2.3.1 Who Discovered
Lecoq de Boisbaudran
Unknown
2.3.2 Discovery
In 1879
Before 5000 BC
2.4 Abundance
2.4.1 Abundance In Universe
5 * 10-7 %6 * 10-8 %
Thallium Metal
5E-09 0.11
3.4.3 Abundance In Sun
~0.0000001 %~0.0000001 %
Beryllium Metal
1E-08 0.1
3.5.2 Abundance In Meteorites
0.00 %0.00 %
Gold Metal
1.7E-07 22
3.6.3 Abundance In Earth's Crust
0.00 %0.00 %
Radium Metal
9.9E-12 8.1
3.6.7 Abundance In Oceans
0.00 %0.00 %
Protactinium Metal
2E-23 1.1
3.6.9 Abundance In Humans
NANA
Radium Metal
1E-13 1.4
4 Uses
4.1 Uses & Benefits
  • Magnets of Samarium cobalt alloy are stronger than that of Iron and hence, they are used in microwave application.
  • Samarium metal also used in optical lasers and infrared absorbing glasses and as a neutron absorber.
  • Silver is mainly used for Jewelry and show piece.
  • It is used for manufacturing high quality mirrors due to its reflectivity property.
4.1.1 Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
Chemical Industry, Clothing Industry, Electrical Industry
4.1.2 Medical Uses
NA
Dentistry, Pharmaceutical Industry
4.1.3 Other Uses
Alloys, In Nuclear Reactors
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues
4.2 Biological Properties
4.2.1 Toxicity
Slightly Toxic
Non Toxic
4.2.2 Present in Human Body
4.2.3 In Blood
0.01 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium Metal
0 1970
5.2.4 In Bone
NA0.44 p.p.m.
Plutonium Metal
0 170000
6 Physical
6.1 Melting Point
1,072.00 °C961.93 °C
Francium Metal
27 3410
7.2 Boiling Point
1,900.00 °C2,212.00 °C
Flerovium Metal
147 5660
7.4 Appearance
7.4.1 Physical State
Solid
Solid
7.4.2 Color
Silvery White
Silvery White
7.4.3 Luster
Lustrous
Metallic
7.5 Hardness
7.5.1 Mohs Hardness
NA2.50
Cesium Metal
0.2 8.5
7.5.4 Brinell Hardness
441.00 MPa251.00 MPa
Cesium Metal
0.14 3490
7.7.3 Vickers Hardness
412.00 MPa229.00 MPa
Palladium Metal
121 3430
7.8 Speed of Sound
2,130.00 m/s2,680.00 m/s
Thallium Metal
818 16200
7.9 Optical Properties
7.9.1 Refractive Index
NANA
Mercury Metal
1.000933 1.7229
7.10.1 Reflectivity
NA97.00 %
Molybdenum Metal
58 97
7.11 Allotropes
7.11.1 α Allotropes
Not Available
Not Available
7.11.2 β Allotropes
Not Available
Not Available
7.11.3 γ Allotropes
Not Available
Not Available
8 Chemical
8.1 Chemical Formula
Sm
Ag
8.2 Isotopes
8.2.1 Known Isotopes
3036
Tennessine Metal
0 38
8.4 Electronegativity
8.4.1 Pauling Electronegativity
1.171.93
Francium Metal
0.7 2.54
9.2.2 Sanderson Electronegativity
NA1.83
Cesium Metal
0.22 2.56
9.2.5 Allred Rochow Electronegativity
1.071.42
Cesium Metal
0.86 1.82
9.3.3 Mulliken-Jaffe Electronegativity
NA1.47
Cesium Metal
0.62 2.48
9.3.6 Allen Electronegativity
NA1.87
Cesium Metal
0.659 2.7
9.4 Electropositivity
9.4.1 Pauling Electropositivity
2.832.07
Gold Metal
1.46 3.3
9.5 Ionization Energies
9.5.1 1st Energy Level
544.50 kJ/mol731.00 kJ/mol
Cesium Metal
375.7 26130
9.5.3 2nd Energy Level
1,070.00 kJ/mol2,070.00 kJ/mol
Ruthenium Metal
710.2162 28750
9.5.6 3rd Energy Level
2,260.00 kJ/mol3,361.00 kJ/mol
Osmium Metal
1600 34230
9.6.3 4th Energy Level
3,990.00 kJ/molNA
Thorium Metal
2780 37066
9.7.3 5th Energy Level
NANA
Dubnium Metal
4305.2 97510
9.7.7 6th Energy Level
NANA
Seaborgium Metal
5715.8 105800
9.8.1 7th Energy level
NANA
Bohrium Metal
7226.8 114300
9.8.3 8th Energy Level
NANA
Hassium Metal
8857.4 125300
9.9.1 9th Energy Level
NANA
Yttrium Metal
14110 134700
9.10.1 10th Energy Level
NANA
Strontium Metal
17100 144300
10.1.2 11th Energy Level
NANA
Yttrium Metal
19900 169988
10.4.2 12th Energy Level
NANA
Molybdenum Metal
22219 189368
10.4.5 13th Energy Level
NANA
Molybdenum Metal
26930 76015
10.4.9 14th Energy Level
NANA
Molybdenum Metal
29196 86450
10.4.10 15th Energy Level
NANA
Manganese Metal
41987 97510
10.5.2 16th Energy Level
NANA
Iron Metal
47206 109480
10.5.5 17th Energy Level
NANA
Cobalt Metal
52737 122200
10.5.8 18th Energy Level
NANA
Nickel Metal
58570 134810
10.6.1 19th Energy Level
NANA
Copper Metal
64702 148700
10.7.1 20th Energy Level
NANA
Molybdenum Metal
80400 171200
10.7.3 21st Energy Level
NANA
Molybdenum Metal
87000 179100
10.9.2 22nd Energy Level
NANA
Molybdenum Metal
93400 184900
10.9.3 23rd Energy Level
NANA
Molybdenum Metal
98420 198800
10.10.2 24th Energy Level
NANA
Molybdenum Metal
104400 195200
10.12.1 25th Energy Level
NANA
Molybdenum Metal
121900 121900
10.12.2 26th Energy Level
NANA
Molybdenum Metal
127700 127700
11.1.3 27th Energy Level
NANA
Molybdenum Metal
133800 133800
11.1.5 28th Energy Level
NANA
Molybdenum Metal
139800 139800
11.1.8 29th Energy Level
NANA
Molybdenum Metal
148100 148100
11.1.10 30th Energy Level
NANA
Molybdenum Metal
154500 154500
11.3 Electrochemical Equivalent
1.87 g/amp-hr4.02 g/amp-hr
Beryllium Metal
0.16812 8.3209
11.6 Electron Work Function
2.70 eV4.26 eV
Cesium Metal
2.14 5.65
11.7 Other Chemical Properties
Ionization, Radioactive Isotopes
Chemical Stability, Ionization, Solubility
12 Atomic
12.1 Atomic Number
6247
Lithium Metal
3 117
12.3 Electron Configuration
[Xe] 4f6 6s2
[Kr] 4d10 5s1
12.4 Crystal Structure
Rhombohedral (RHO)
Face Centered Cubic (FCC)
12.4.1 Crystal Lattice
12.5 Atom
12.5.1 Number of Protons
6247
Lithium Metal
3 117
12.5.4 Number of Neutrons
8861
Lithium Metal
4 184
12.5.8 Number of Electrons
6247
Lithium Metal
3 117
12.8 Radius of an Atom
12.8.1 Atomic Radius
180.00 pm144.00 pm
Beryllium Metal
112 265
12.9.1 Covalent Radius
198.00 pm145.00 pm
Beryllium Metal
96 260
14.1.1 Van der Waals Radius
229.00 pm172.00 pm
Zinc Metal
139 348
14.2 Atomic Weight
150.36 amu107.87 amu
Lithium Metal
6.94 294
14.7 Atomic Volume
19.95 cm3/mol10.30 cm3/mol
Manganese Metal
1.39 71.07
14.8 Adjacent Atomic Numbers
14.8.1 Previous Element
14.8.2 Next Element
14.9 Valence Electron Potential
44.80 (-eV)11.40 (-eV)
Francium Metal
8 392.42
14.10 Lattice Constant
362.10 pm408.53 pm
Beryllium Metal
228.58 891.25
14.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
14.12 Lattice C/A Ratio
NANA
Beryllium Metal
1.567 1.886
16 Mechanical
16.1 Density
16.1.1 Density At Room Temperature
7.52 g/cm310.49 g/cm3
Lithium Metal
0.534 40.7
16.1.3 Density When Liquid (at m.p.)
7.16 g/cm39.32 g/cm3
Lithium Metal
0.512 20
16.4 Tensile Strength
NANA
Indium Metal
2.5 11000
16.6 Viscosity
NANA
Mercury Metal
0.001526 0.001526
16.9 Vapor Pressure
16.9.1 Vapor Pressure at 1000 K
0.94 (Pa)0.00 (Pa)
Cerium Metal
2.47E-11 121
16.10.1 Vapor Pressure at 2000 K
NANA
Tungsten Metal
2.62E-10 774
16.13 Elasticity properties
16.13.1 Shear Modulus
19.50 GPa30.00 GPa
Potassium Metal
1.3 222
16.15.1 Bulk Modulus
37.80 GPa100.00 GPa
Cesium Metal
1.6 462
16.17.1 Young's Modulus
49.70 GPa83.00 GPa
Cesium Metal
1.7 528
17.2 Poisson Ratio
0.270.37
Beryllium Metal
0.032 0.47
17.4 Other Mechanical Properties
NA
Ductile, Malleable
18 Magnetic
18.1 Magnetic Characteristics
18.1.1 Specific Gravity
7.5210.50
Lithium Metal
0.53 4500
18.2.1 Magnetic Ordering
Paramagnetic
Diamagnetic
18.2.2 Permeability
NANA
Bismuth Metal
1.25643E-06 0.0063
18.3.1 Susceptibility
NA0.00
Bismuth Metal
-0.000166 200000
18.5 Electrical Properties
18.5.1 Electrical Property
Conductor
Conductor
18.5.2 Resistivity
0.94 nΩ·m15.87 nΩ·m
Thallium Metal
0.18 961
18.5.4 Electrical Conductivity
0.01 106/cm Ω0.63 106/cm Ω
Plutonium Metal
0.00666 0.63
18.6.2 Electron Affinity
50.00 kJ/mol125.60 kJ/mol
Mercury Metal
0 222.8
19 Thermal
19.1 Specific Heat
0.20 J/(kg K)0.24 J/(kg K)
Americium Metal
0.11 3.6
19.2 Molar Heat Capacity
29.54 J/mol·K25.35 J/mol·K
Beryllium Metal
16.443 62.7
19.3 Thermal Conductivity
13.30 W/m·K429.00 W/m·K
Neptunium Metal
6.3 429
19.5 Critical Temperature
NANA
Ytterbium Metal
26.3 3223
20.2 Thermal Expansion
12.70 µm/(m·K)18.90 µm/(m·K)
Tungsten Metal
4.5 97
20.3 Enthalpy
20.3.1 Enthalpy of Vaporization
166.40 kJ/mol255.10 kJ/mol
Zinc Metal
7.32 799.1
20.4.3 Enthalpy of Fusion
8.62 kJ/mol11.30 kJ/mol
Cesium Metal
2.1 35.23
20.4.5 Enthalpy of Atomization
209.00 kJ/mol284.50 kJ/mol
Mercury Metal
61.5 837
21.2 Standard Molar Entropy
69.60 J/mol.K42.60 J/mol.K
Beryllium Metal
9.5 198.1