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Polonium
Polonium

Lithium
Lithium



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Polonium vs Lithium

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1 Periodic Table
1.1 Symbol
Po
Li
1.2 Group Number
161
Gadolinium
0 17
1.3 Period Number
62
Sodium
2 7
1.4 Block
p block
s block
1.5 Element Family
Post-​Transition
Alkali
1.6 CAS Number
74400867439932
Aluminium
7429905 54386242
1.7 Space Group Name
Pm-3m
Im_ 3m
1.8 Space Group Number
221.00229.00
Plutonium
11 229
2 Facts
2.1 Interesting Facts
  • Polonium was the first radioactive element to be discovered.
  • Polonium element and its compounds are highly radioactive.
  • Its alloy with Beryllium provides source of neutrons.
  • Heat capacity of Lithium is very high.
  • Lithium inflammable and highly explosive metal, hence it has to be stored properly.
2.2 Sources
Mining, Ores of metals
Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
Pierre Curie and Marie Curie
Johan August Arfwedson
2.3.2 Discovery
In 1898
In 1817
2.4 Abundance
2.4.1 Abundance In Universe
NA6 * 10-7 %
Thallium
5E-09 0.11
2.4.2 Abundance In Sun
~-9999 %~0.00017 %
Beryllium
1E-08 0.1
2.4.3 Abundance In Meteorites
NA0.00 %
Gold
1.7E-07 22
2.4.4 Abundance In Earth's Crust
NA0.00 %
Radium
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 %
Radium
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • Polonium metal has different Allotropes, it is used in antistatic devices and for research purpose.
  • A 1 gram of Polonium can reach a temperature of 500°C, hence it is used as a heat source for space equipment.
  • The main usage of Lithium is manufacturing rechargeable batteries for electronic equipment and gadgets.
  • it is also used in manufacturing non-rechargeable batteries.
3.1.1 Industrial Uses
Aerospace Industry, Ammunition Industry
Aerospace Industry, Electrical Industry, Electronic Industry
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
Alloys
Alloys
3.2 Biological Properties
3.2.1 Toxicity
Highly Toxic
NA
3.2.2 Present in Human Body
3.2.3 In Blood
0.00 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium
0 1970
3.2.4 In Bone
0.00 p.p.m.1.30 p.p.m.
Plutonium
0 170000
4 Physical
4.1 Melting Point
254.00 °C180.54 °C
Francium
27 3410
4.2 Boiling Point
962.00 °C1,347.00 °C
Flerovium
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silver
Silvery White
4.3.3 Luster
NA
NA
4.4 Hardness
4.4.1 Mohs Hardness
NA0.60
Cesium
0.2 8.5
4.4.2 Brinell Hardness
NA5.00 MPa
Cesium
0.14 3490
4.4.3 Vickers Hardness
NANA
Palladium
121 3430
4.5 Speed of Sound
NA6,000.00 m/s
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
α-polonium
Not Available
4.7.2 β Allotropes
β-polonium
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
Po
Li
5.2 Isotopes
5.2.1 Known Isotopes
298
Tennessine
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
2.000.98
Francium
0.7 2.54
5.3.2 Sanderson Electronegativity
NA0.89
Cesium
0.22 2.56
5.3.3 Allred Rochow Electronegativity
1.760.97
Cesium
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
2.480.97
Cesium
0.62 2.48
5.3.5 Allen Electronegativity
2.190.91
Cesium
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
2.003.02
Gold
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
812.10 kJ/mol520.20 kJ/mol
Cesium
375.7 26130
5.5.2 2nd Energy Level
NA7,298.10 kJ/mol
Ruthenium
710.2162 28750
5.5.3 3rd Energy Level
NA11,815.00 kJ/mol
Osmium
1600 34230
5.5.4 4th Energy Level
NANA
Thorium
2780 37066
5.5.5 5th Energy Level
NANA
Dubnium
4305.2 97510
5.5.6 6th Energy Level
NANA
Seaborgium
5715.8 105800
5.5.7 7th Energy level
NANA
Bohrium
7226.8 114300
5.5.8 8th Energy Level
NANA
Hassium
8857.4 125300
5.5.9 9th Energy Level
NANA
Yttrium
14110 134700
5.5.10 10th Energy Level
NANA
Strontium
17100 144300
5.5.11 11th Energy Level
NANA
Yttrium
19900 169988
5.5.12 12th Energy Level
NANA
Molybdenum
22219 189368
5.5.13 13th Energy Level
NANA
Molybdenum
26930 76015
5.5.14 14th Energy Level
NANA
Molybdenum
29196 86450
5.5.15 15th Energy Level
NANA
Manganese
41987 97510
5.5.16 16th Energy Level
NANA
Iron
47206 109480
5.5.17 17th Energy Level
NANA
Cobalt
52737 122200
5.5.18 18th Energy Level
NANA
Nickel
58570 134810
5.5.19 19th Energy Level
NANA
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
3.90 g/amp-hr0.26 g/amp-hr
Beryllium
0.16812 8.3209
5.7 Electron Work Function
NA2.90 eV
Cesium
2.14 5.65
5.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
Corrosion, Flammable, Ionization, Radioactive Isotopes
6 Atomic
6.1 Atomic Number
843
Sodium
3 117
6.2 Electron Configuration
[Xe] 4f14 5d10 6s2 6p4
[He] 2s1
6.3 Crystal Structure
Monoclinic (MON)
Body Centered Cubic (BCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
843
Sodium
3 117
6.4.2 Number of Neutrons
1254
Sodium
4 184
6.4.3 Number of Electrons
843
Sodium
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
168.00 pm152.00 pm
Beryllium
112 265
6.5.2 Covalent Radius
140.00 pm128.00 pm
Beryllium
96 260
6.5.3 Van der Waals Radius
197.00 pm182.00 pm
Zinc
139 348
6.6 Atomic Weight
209.00 amu6.94 amu
Sodium
6.94 294
6.7 Atomic Volume
22.23 cm3/mol13.10 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
NA19.00 (-eV)
Francium
8 392.42
6.10 Lattice Constant
335.90 pm351.00 pm
Beryllium
228.58 891.25
6.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
6.12 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
9.20 g/cm30.53 g/cm3
Palladium
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
9.40 g/cm30.51 g/cm3
Sodium
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
NA109.00 (Pa)
Cerium
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
NANA
Tungsten
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
NA4.20 GPa
Potassium
1.3 222
7.5.2 Bulk Modulus
NA11.00 GPa
Cesium
1.6 462
7.5.3 Young's Modulus
NA4.90 GPa
Cesium
1.7 528
7.6 Poisson Ratio
NANA
Beryllium
0.032 0.47
7.7 Other Mechanical Properties
NA
NA
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
9.320.53
Palladium
0.53 4500
8.1.2 Magnetic Ordering
Nonmagnetic
Paramagnetic
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
Conductor
8.2.2 Resistivity
0.40 nΩ·m92.80 nΩ·m
Thallium
0.18 961
8.2.3 Electrical Conductivity
0.02 106/cm Ω0.11 106/cm Ω
Plutonium
0.00666 0.63
8.2.4 Electron Affinity
183.30 kJ/mol59.60 kJ/mol
Mercury
0 222.8
9 Thermal
9.1 Specific Heat
0.12 J/(kg K)3.60 J/(kg K)
Americium
0.11 3.6
9.2 Molar Heat Capacity
26.40 J/mol·K24.86 J/mol·K
Beryllium
16.443 62.7
9.3 Thermal Conductivity
20.00 W/m·K84.80 W/m·K
Neptunium
6.3 429
9.4 Critical Temperature
NA3,223.00 K
Ytterbium
26.3 3223
9.5 Thermal Expansion
23.50 µm/(m·K)46.00 µm/(m·K)
Tungsten
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
60.30 kJ/mol134.70 kJ/mol
Zinc
7.32 799.1
9.6.2 Enthalpy of Fusion
13.00 kJ/mol3.00 kJ/mol
Cesium
2.1 35.23
9.6.3 Enthalpy of Atomization
134.00 kJ/mol160.70 kJ/mol
Mercury
61.5 837
9.7 Standard Molar Entropy
NA29.10 J/mol.K
Beryllium
9.5 198.1