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Scandium
Scandium

Radium
Radium



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Scandium vs Radium

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1 Periodic Table
1.1 Symbol
Sc
Ra
1.2 Group Number
32
Gadolinium
0 17
1.3 Period Number
47
Lithium
2 7
1.4 Block
d block
s block
1.5 Element Family
Transition Metal
Alkaline Earth
1.6 CAS Number
74402027440144
Aluminium
7429905 54386242
1.7 Space Group Name
P63/mmc
Im_ 3m
1.8 Space Group Number
194.00229.00
Plutonium
11 229
2 Facts
2.1 Interesting Facts
  • Scandium is known as one of the rare earth elements.
  • Scandium metal found in rare minerals called Wolframite .
  • Radium metal is the heaviest metal of Alkaline earth metals column.
  • Radium metal is highly radioactive and does not have any stable isotopes.
2.2 Sources
Found in Minerals, Mining, Ores of metals, Ores of Minerals
Mining, Ores of metals
2.3 History
2.3.1 Who Discovered
Lars Fredrik Nilson
Not Available
2.3.2 Discovery
In 1879
In 1898
2.4 Abundance
2.4.1 Abundance In Universe
3 * 10-6 %NA
Thallium
5E-09 0.11
2.4.2 Abundance In Sun
~0.000004 %~-9999 %
Beryllium
1E-08 0.1
2.4.3 Abundance In Meteorites
0.00 %NA
Gold
1.7E-07 22
2.4.4 Abundance In Earth's Crust
0.00 %0.00 %
Palladium
9.9E-12 8.1
2.4.5 Abundance In Oceans
0.00 %0.00 %
Protactinium
2E-23 1.1
2.4.6 Abundance In Humans
NA0.00 %
Tin
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • Uses of Scandium are limited to research purpose only. However, it has very low density and higher melting point.
  • Its compounds like scandium iodide is used in mercury vapor lamps to produce very bright white light.
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
3.1.1 Industrial Uses
Electrical Industry, Electronic Industry
NA
3.1.2 Medical Uses
NA
Pharmaceutical Industry
3.1.3 Other Uses
Alloys
NA
3.2 Biological Properties
3.2.1 Toxicity
Non Toxic
Highly Toxic
3.2.2 Present in Human Body
3.2.3 In Blood
0.01 Blood/mg dm-3NA
Plutonium
0 1970
3.2.4 In Bone
0.00 p.p.m.NA
Plutonium
0 170000
4 Physical
4.1 Melting Point
1,539.00 °C700.00 °C
Francium
27 3410
4.2 Boiling Point
2,832.00 °C1,737.00 °C
Flerovium
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silvery White
Silvery White
4.3.3 Luster
Lustrous
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
NANA
Cesium
0.2 8.5
4.4.2 Brinell Hardness
750.00 MPaNA
Cesium
0.14 3490
4.4.3 Vickers Hardness
NANA
Palladium
121 3430
4.5 Speed of Sound
NANA
Thallium
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
NANA
Mercury
1.000933 1.7229
4.6.2 Reflectivity
NANA
Molybdenum
58 97
4.7 Allotropes
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
Sc
Ra
5.2 Isotopes
5.2.1 Known Isotopes
1333
Tennessine
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
1.360.90
Francium
0.7 2.54
5.3.2 Sanderson Electronegativity
1.02NA
Cesium
0.22 2.56
5.3.3 Allred Rochow Electronegativity
1.200.97
Cesium
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
NA0.92
Cesium
0.62 2.48
5.3.5 Allen Electronegativity
1.190.89
Cesium
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
2.643.10
Gold
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
633.10 kJ/mol509.30 kJ/mol
Cesium
375.7 26130
5.5.2 2nd Energy Level
1,235.00 kJ/mol979.00 kJ/mol
Ruthenium
710.2162 28750
5.5.3 3rd Energy Level
2,388.60 kJ/molNA
Osmium
1600 34230
5.5.4 4th Energy Level
7,090.60 kJ/molNA
Thorium
2780 37066
5.5.5 5th Energy Level
8,843.00 kJ/molNA
Dubnium
4305.2 97510
5.5.6 6th Energy Level
10,679.00 kJ/molNA
Seaborgium
5715.8 105800
5.5.7 7th Energy level
13,310.00 kJ/molNA
Bohrium
7226.8 114300
5.5.8 8th Energy Level
15,250.00 kJ/molNA
Hassium
8857.4 125300
5.5.9 9th Energy Level
17,370.00 kJ/molNA
Yttrium
14110 134700
5.5.10 10th Energy Level
21,726.00 kJ/molNA
Strontium
17100 144300
5.5.11 11th Energy Level
24,102.00 kJ/molNA
Yttrium
19900 169988
5.5.12 12th Energy Level
66,320.00 kJ/molNA
Molybdenum
22219 189368
5.5.13 13th Energy Level
73,010.00 kJ/molNA
Molybdenum
26930 76015
5.5.14 14th Energy Level
80,160.00 kJ/molNA
Molybdenum
29196 86450
5.5.15 15th Energy Level
89,490.00 kJ/molNA
Manganese
41987 97510
5.5.16 16th Energy Level
97,400.00 kJ/molNA
Iron
47206 109480
5.5.17 17th Energy Level
105,600.00 kJ/molNA
Cobalt
52737 122200
5.5.18 18th Energy Level
117,000.00 kJ/molNA
Nickel
58570 134810
5.5.19 19th Energy Level
124,270.00 kJ/molNA
Copper
64702 148700
5.5.20 20th Energy Level
NANA
Molybdenum
80400 171200
5.5.21 21st Energy Level
NANA
Molybdenum
87000 179100
5.5.22 22nd Energy Level
NANA
Molybdenum
93400 184900
5.5.23 23rd Energy Level
NANA
Molybdenum
98420 198800
5.5.24 24th Energy Level
NANA
Molybdenum
104400 195200
5.5.25 25th Energy Level
NANA
Molybdenum
121900 121900
5.5.26 26th Energy Level
NANA
Molybdenum
127700 127700
5.5.27 27th Energy Level
NANA
Molybdenum
133800 133800
5.5.28 28th Energy Level
NANA
Molybdenum
139800 139800
5.5.29 29th Energy Level
NANA
Molybdenum
148100 148100
5.5.30 30th Energy Level
NANA
Molybdenum
154500 154500
5.6 Electrochemical Equivalent
0.56 g/amp-hr4.22 g/amp-hr
Beryllium
0.16812 8.3209
5.7 Electron Work Function
3.50 eVNA
Cesium
2.14 5.65
5.8 Other Chemical Properties
Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility
Ionization, Radioactive Isotopes, Radioactivity
6 Atomic
6.1 Atomic Number
2188
Lithium
3 117
6.2 Electron Configuration
[Ar] 3d1 4s2
[Rn] 7s2
6.3 Crystal Structure
Hexagonal Close Packed (HCP)
Body Centered Cubic (BCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
2188
Lithium
3 117
6.4.2 Number of Neutrons
24138
Lithium
4 184
6.4.3 Number of Electrons
2188
Lithium
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
162.00 pmNA
Beryllium
112 265
6.5.2 Covalent Radius
170.00 pm221.00 pm
Beryllium
96 260
6.5.3 Van der Waals Radius
211.00 pm283.00 pm
Zinc
139 348
6.6 Atomic Weight
44.96 amu226.00 amu
Lithium
6.94 294
6.7 Atomic Volume
15.00 cm3/mol45.20 cm3/mol
Manganese
1.39 71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
58.00 (-eV)20.10 (-eV)
Francium
8 392.42
6.10 Lattice Constant
330.90 pm514.80 pm
Beryllium
228.58 891.25
6.11 Lattice Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2
6.12 Lattice C/A Ratio
1.59NA
Beryllium
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
2.99 g/cm35.50 g/cm3
Lithium
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
2.80 g/cm3NA
Lithium
0.512 20
7.2 Tensile Strength
NANA
Indium
2.5 11000
7.3 Viscosity
NANA
Mercury
0.001526 0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
0.00 (Pa)NA
Cerium
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
91.30 (Pa)NA
Tungsten
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
29.10 GPaNA
Potassium
1.3 222
7.5.2 Bulk Modulus
56.60 GPaNA
Cesium
1.6 462
7.5.3 Young's Modulus
74.40 GPaNA
Cesium
1.7 528
7.6 Poisson Ratio
0.28NA
Beryllium
0.032 0.47
7.7 Other Mechanical Properties
NA
NA
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
2.995.00
Lithium
0.53 4500
8.1.2 Magnetic Ordering
Paramagnetic
Nonmagnetic
8.1.3 Permeability
NANA
Bismuth
1.25643E-06 0.0063
8.1.4 Susceptibility
NANA
Bismuth
-0.000166 200000
8.2 Electrical Properties
8.2.1 Electrical Property
Conductor
NA
8.2.2 Resistivity
562.00 nΩ·m100.00 nΩ·m
Thallium
0.18 961
8.2.3 Electrical Conductivity
0.02 106/cm ΩNA
Plutonium
0.00666 0.63
8.2.4 Electron Affinity
18.10 kJ/molNA
Mercury
0 222.8
9 Thermal
9.1 Specific Heat
0.60 J/(kg K)0.12 J/(kg K)
Americium
0.11 3.6
9.2 Molar Heat Capacity
25.52 J/mol·KNA
Beryllium
16.443 62.7
9.3 Thermal Conductivity
15.80 W/m·K18.60 W/m·K
Neptunium
6.3 429
9.4 Critical Temperature
NANA
Ytterbium
26.3 3223
9.5 Thermal Expansion
10.20 µm/(m·K)NA
Tungsten
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
314.20 kJ/molNA
Zinc
7.32 799.1
9.6.2 Enthalpy of Fusion
14.10 kJ/molNA
Cesium
2.1 35.23
9.6.3 Enthalpy of Atomization
343.00 kJ/mol163.00 kJ/mol
Mercury
61.5 837
9.7 Standard Molar Entropy
34.60 J/mol.K71.00 J/mol.K
Beryllium
9.5 198.1