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Tantalum
Tantalum

Radium
Radium



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1 Periodic Table
1.1 Symbol
Ta
Ra
1.2 Group Number
52
Gadolinium
0 17
1.3 Period Number
67
Lithium
2 7
1.5 Block
d block
s block
1.6 Element Family
Transition Metal
Alkaline Earth
1.7 CAS Number
74402577440144
Aluminium
7429905 54386242
1.13 Space Group Name
Im_ 3m
Im_ 3m
1.14 Space Group Number
229.00229.00
Plutonium
11 229
2 Facts
2.1 Interesting Facts
  • Tantalum metal is known as corrosion resistance.
  • Tantalum metal can easily fabricated and It is a good conductor of heat and electricity.
  • 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 Minerals
Mining, Ores of metals
2.3 History
2.3.1 Who Discovered
Anders Gustaf Ekeberg
Not Available
2.3.2 Discovery
In 1802
In 1898
2.4 Abundance
2.4.1 Abundance In Universe
8 * 10-9 %NA
Thallium
5E-09 0.11
3.4.2 Abundance In Sun
~-9999 %~-9999 %
Beryllium
1E-08 0.1
3.6.1 Abundance In Meteorites
0.00 %NA
Gold
1.7E-07 22
3.7.2 Abundance In Earth's Crust
0.00 %0.00 %
Palladium
9.9E-12 8.1
3.8.3 Abundance In Oceans
0.00 %0.00 %
Protactinium
2E-23 1.1
3.8.7 Abundance In Humans
NA0.00 %
Tin
1E-13 1.4
4 Uses
4.1 Uses & Benefits
  • Tantalum metal is mainly used in the manufacturing of electron components. Its Oxide layer acts as an insulator.
  • Tantalum metal is also used in surgical transplant like replacement of bone, skull plates and as a woven gauze.
  • It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
  • It is used in luminous paints.
4.1.1 Industrial Uses
Electrical Industry, Electronic Industry
NA
4.1.2 Medical Uses
NA
Pharmaceutical Industry
4.1.3 Other Uses
Alloys
NA
4.2 Biological Properties
4.2.1 Toxicity
Low Toxic
Highly Toxic
4.2.2 Present in Human Body
4.2.3 In Blood
NANA
Plutonium
0 1970
4.3.3 In Bone
0.03 p.p.m.NA
Plutonium
0 170000
6 Physical
6.1 Melting Point
2,996.00 °C700.00 °C
Francium
27 3410
7.2 Boiling Point
5,425.00 °C1,737.00 °C
Flerovium
147 5660
8.2 Appearance
8.2.1 Physical State
Solid
Solid
8.2.2 Color
Gray Blue
Silvery White
8.2.3 Luster
Metallic
Metallic
8.3 Hardness
8.3.1 Mohs Hardness
6.50NA
Cesium
0.2 8.5
8.4.1 Brinell Hardness
440.00 MPaNA
Cesium
0.14 3490
8.6.2 Vickers Hardness
870.00 MPaNA
Palladium
121 3430
8.9 Speed of Sound
3,400.00 m/sNA
Thallium
818 16200
8.11 Optical Properties
8.11.1 Refractive Index
NANA
Mercury
1.000933 1.7229
8.11.5 Reflectivity
78.00 %NA
Molybdenum
58 97
8.13 Allotropes
8.13.1 α Allotropes
Not Available
Not Available
8.13.2 β Allotropes
Not Available
Not Available
8.13.3 γ Allotropes
Not Available
Not Available
9 Chemical
9.1 Chemical Formula
Ta
Ra
9.2 Isotopes
9.2.1 Known Isotopes
3133
Tennessine
0 38
9.4 Electronegativity
9.4.1 Pauling Electronegativity
1.500.90
Francium
0.7 2.54
9.5.3 Sanderson Electronegativity
NANA
Cesium
0.22 2.56
10.2.2 Allred Rochow Electronegativity
1.330.97
Cesium
0.86 1.82
10.2.7 Mulliken-Jaffe Electronegativity
NA0.92
Cesium
0.62 2.48
10.4.1 Allen Electronegativity
1.340.89
Cesium
0.659 2.7
11.2 Electropositivity
11.2.1 Pauling Electropositivity
2.503.10
Gold
1.46 3.3
11.3 Ionization Energies
11.3.1 1st Energy Level
761.00 kJ/mol509.30 kJ/mol
Cesium
375.7 26130
11.3.7 2nd Energy Level
1,500.00 kJ/mol979.00 kJ/mol
Ruthenium
710.2162 28750
11.3.12 3rd Energy Level
NANA
Osmium
1600 34230
11.5.2 4th Energy Level
NANA
Thorium
2780 37066
11.7.2 5th Energy Level
NANA
Dubnium
4305.2 97510
12.1.1 6th Energy Level
NANA
Seaborgium
5715.8 105800
12.1.4 7th Energy level
NANA
Bohrium
7226.8 114300
12.4.3 8th Energy Level
NANA
Hassium
8857.4 125300
12.4.7 9th Energy Level
NANA
Yttrium
14110 134700
13.2.1 10th Energy Level
NANA
Strontium
17100 144300
13.3.2 11th Energy Level
NANA
Yttrium
19900 169988
13.5.2 12th Energy Level
NANA
Molybdenum
22219 189368
13.7.3 13th Energy Level
NANA
Molybdenum
26930 76015
13.8.3 14th Energy Level
NANA
Molybdenum
29196 86450
13.10.2 15th Energy Level
NANA
Manganese
41987 97510
13.11.1 16th Energy Level
NANA
Iron
47206 109480
13.12.3 17th Energy Level
NANA
Cobalt
52737 122200
13.14.1 18th Energy Level
NANA
Nickel
58570 134810
13.15.1 19th Energy Level
NANA
Copper
64702 148700
13.15.4 20th Energy Level
NANA
Molybdenum
80400 171200
14.1.2 21st Energy Level
NANA
Molybdenum
87000 179100
14.1.4 22nd Energy Level
NANA
Molybdenum
93400 184900
14.2.2 23rd Energy Level
NANA
Molybdenum
98420 198800
14.2.5 24th Energy Level
NANA
Molybdenum
104400 195200
14.2.6 25th Energy Level
NANA
Molybdenum
121900 121900
14.3.2 26th Energy Level
NANA
Molybdenum
127700 127700
14.4.2 27th Energy Level
NANA
Molybdenum
133800 133800
14.5.2 28th Energy Level
NANA
Molybdenum
139800 139800
14.5.4 29th Energy Level
NANA
Molybdenum
148100 148100
14.5.7 30th Energy Level
NANA
Molybdenum
154500 154500
14.7 Electrochemical Equivalent
1.35 g/amp-hr4.22 g/amp-hr
Beryllium
0.16812 8.3209
14.8 Electron Work Function
4.25 eVNA
Cesium
2.14 5.65
14.9 Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes, Radioactivity
15 Atomic
15.1 Atomic Number
7388
Lithium
3 117
15.2 Electron Configuration
[Xe] 4f14 5d3 6s2
[Rn] 7s2
15.3 Crystal Structure
Body Centered Cubic (BCC)
Body Centered Cubic (BCC)
15.3.1 Crystal Lattice
15.4 Atom
15.4.1 Number of Protons
7388
Lithium
3 117
15.5.3 Number of Neutrons
108138
Lithium
4 184
16.1.5 Number of Electrons
7388
Lithium
3 117
16.3 Radius of an Atom
16.3.1 Atomic Radius
146.00 pmNA
Beryllium
112 265
16.5.3 Covalent Radius
170.00 pm221.00 pm
Beryllium
96 260
17.1.2 Van der Waals Radius
200.00 pm283.00 pm
Zinc
139 348
17.2 Atomic Weight
180.95 amu226.00 amu
Lithium
6.94 294
17.6 Atomic Volume
10.90 cm3/mol45.20 cm3/mol
Manganese
1.39 71.07
18.3 Adjacent Atomic Numbers
18.3.1 Previous Element
18.3.2 Next Element
18.4 Valence Electron Potential
110.00 (-eV)20.10 (-eV)
Francium
8 392.42
18.6 Lattice Constant
330.13 pm514.80 pm
Beryllium
228.58 891.25
18.9 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
18.10 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
19 Mechanical
19.1 Density
19.1.1 Density At Room Temperature
16.69 g/cm35.50 g/cm3
Lithium
0.534 40.7
19.2.2 Density When Liquid (at m.p.)
15.00 g/cm3NA
Lithium
0.512 20
19.5 Tensile Strength
NANA
Indium
2.5 11000
19.7 Viscosity
NANA
Mercury
0.001526 0.001526
19.8 Vapor Pressure
19.8.1 Vapor Pressure at 1000 K
NANA
Cerium
2.47E-11 121
19.10.2 Vapor Pressure at 2000 K
0.00 (Pa)NA
Tungsten
2.62E-10 774
19.13 Elasticity properties
19.13.1 Shear Modulus
69.00 GPaNA
Potassium
1.3 222
20.1.2 Bulk Modulus
200.00 GPaNA
Cesium
1.6 462
20.1.4 Young's Modulus
186.00 GPaNA
Cesium
1.7 528
20.3 Poisson Ratio
0.34NA
Beryllium
0.032 0.47
20.5 Other Mechanical Properties
Ductile
NA
21 Magnetic
21.1 Magnetic Characteristics
21.1.1 Specific Gravity
16.655.00
Lithium
0.53 4500
21.2.2 Magnetic Ordering
Paramagnetic
Nonmagnetic
21.2.3 Permeability
NANA
Bismuth
1.25643E-06 0.0063
21.2.4 Susceptibility
NANA
Bismuth
-0.000166 200000
1.2 Electrical Properties
1.2.1 Electrical Property
Conductor
NA
1.2.2 Resistivity
131.00 nΩ·m100.00 nΩ·m
Thallium
0.18 961
1.4.1 Electrical Conductivity
0.08 106/cm ΩNA
Plutonium
0.00666 0.63
1.6.3 Electron Affinity
31.00 kJ/molNA
Mercury
0 222.8
2 Thermal
2.1 Specific Heat
0.14 J/(kg K)0.12 J/(kg K)
Americium
0.11 3.6
2.3 Molar Heat Capacity
25.36 J/mol·KNA
Beryllium
16.443 62.7
3.2 Thermal Conductivity
57.50 W/m·K18.60 W/m·K
Neptunium
6.3 429
3.3 Critical Temperature
NANA
Ytterbium
26.3 3223
3.5 Thermal Expansion
6.30 µm/(m·K)NA
Tungsten
4.5 97
1.26 Enthalpy
1.26.1 Enthalpy of Vaporization
753.10 kJ/molNA
Zinc
7.32 799.1
1.26.2 Enthalpy of Fusion
31.40 kJ/molNA
Cesium
2.1 35.23
1.26.3 Enthalpy of Atomization
782.00 kJ/mol163.00 kJ/mol
Mercury
61.5 837
1.3 Standard Molar Entropy
41.50 J/mol.K71.00 J/mol.K
Beryllium
9.5 198.1