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Palladium
Palladium

Neptunium
Neptunium



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Palladium
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Palladium vs Neptunium

1 Periodic Table
1.1 Symbol
Pd
Np
1.2 Group Number
10NA
Gadolinium
0 17
1.3 Period Number
57
Lithium
2 7
1.4 Block
d block
f block
1.5 Element Family
Transition Metal
Actinide
1.6 CAS Number
74400537439998
Aluminium
7429905 54386242
1.7 Space Group Name
Fm_ 3m
Pnma
1.8 Space Group Number
225.0062.00
Plutonium
11 229
2 Facts
2.1 Interesting Facts
  • Palladium alloys are used for Jewelry contains (95% Palladium and 5% Ruthenium)
  • In the late 1800s, Palladium metal used have more economical value than the Platinum metal.
  • Palladium element is known as a good catalyst
Not Available
2.2 Sources
Ores of metals
Made by Bombarding Uranium with Neutrons, Ores of metals
2.3 History
2.3.1 Who Discovered
William Hyde Wollaston
Edwin McMillan and Philip H. Abelson
2.3.2 Discovery
In 1803
In 1940
2.4 Abundance
2.4.1 Abundance In Universe
2 * 10-7 %NA
Thallium
5E-09 0.11
2.4.2 Abundance In Sun
~0.0000003 %~-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 %NA
Radium
9.9E-12 8.1
2.4.5 Abundance In Oceans
NANA
Protactinium
2E-23 1.1
2.4.6 Abundance In Humans
NANA
Radium
1E-13 1.4
3 Uses
3.1 Uses & Benefits
  • Mostly palladium metal is used in catalytic converters. In electronic industry it is used in ceramic capacitors of mobile and computer.
  • It is used in jewellery and dental fillings and crowns.
  • Currently known uses of Neptunium metal are limited to research purpose only.
  • Neptunium’s isotope neptunium-237 is used as a neutron detectors.
3.1.1 Industrial Uses
Aerospace Industry, Automobile Industry, Electronic Industry
NA
3.1.2 Medical Uses
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing
NA
3.1.3 Other Uses
Coinage, Bullion, Jewellery
Alloys, Nuclear Research, Research Purposes
3.2 Biological Properties
3.2.1 Toxicity
Toxic
Toxic
3.2.2 Present in Human Body
3.2.3 In Blood
NA0.00 Blood/mg dm-3
Plutonium
0 1970
3.2.4 In Bone
NA0.00 p.p.m.
Plutonium
0 170000
4 Physical
4.1 Melting Point
1,554.90 °C640.00 °C
Francium
27 3410
4.2 Boiling Point
2,963.00 °C3,902.00 °C
Flerovium
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silver
Silver
4.3.3 Luster
Metallic
Metallic
4.4 Hardness
4.4.1 Mohs Hardness
4.75NA
Cesium
0.2 8.5
4.4.2 Brinell Hardness
320.00 MPaNA
Cesium
0.14 3490
4.4.3 Vickers Hardness
121.00 MPaNA
Gold
121 3430
4.5 Speed of Sound
3,070.00 m/sNA
Thallium
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
1.72NA
Mercury
1.000933 1.7229
4.6.2 Reflectivity
84.00 %NA
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
Pd
Np
5.2 Isotopes
5.2.1 Known Isotopes
3820
Tennessine
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
2.201.36
Francium
0.7 2.54
5.3.2 Sanderson Electronegativity
NANA
Cesium
0.22 2.56
5.3.3 Allred Rochow Electronegativity
1.351.22
Cesium
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
NANA
Cesium
0.62 2.48
5.3.5 Allen Electronegativity
1.59NA
Cesium
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
1.802.64
Gold
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
520.23 kJ/mol604.50 kJ/mol
Cesium
375.7 26130
5.5.2 2nd Energy Level
7,298.22 kJ/mol1,128.00 kJ/mol
Ruthenium
710.2162 28750
5.5.3 3rd Energy Level
11,815.13 kJ/mol1,997.00 kJ/mol
Osmium
1600 34230
5.5.4 4th Energy Level
NA3,242.00 kJ/mol
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
1.99 g/amp-hr1.77 g/amp-hr
Beryllium
0.16812 8.3209
5.7 Electron Work Function
5.12 eVNA
Cesium
2.14 5.65
5.8 Other Chemical Properties
Chemical Stability, Corrosion, Ionization, Solubility
Ionization, Radioactive Isotopes, Radioactivity, Solubility
6 Atomic
6.1 Atomic Number
4693
Lithium
3 117
6.2 Electron Configuration
[Kr] 4d10
[Rn] 5f4 6d1 7s2
6.3 Crystal Structure
Face Centered Cubic (FCC)
Orthorhombic (ORTH)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
4693
Lithium
3 117
6.4.2 Number of Neutrons
60144
Lithium
4 184
6.4.3 Number of Electrons
4693
Lithium
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
137.00 pm155.00 pm
Beryllium
112 265
6.5.2 Covalent Radius
139.00 pm190.00 pm
Beryllium
96 260
6.5.3 Van der Waals Radius
163.00 pm221.00 pm
Zinc
139 348
6.6 Atomic Weight
106.42 amu237.00 amu
Lithium
6.94 294
6.7 Atomic Volume
8.90 cm3/mol11.62 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
33.00 (-eV)96.00 (-eV)
Francium
8 392.42
6.10 Lattice Constant
389.07 pm666.30 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
12.02 g/cm319.38 g/cm3
Lithium
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
10.38 g/cm3NA
Lithium
0.512 20
7.2 Tensile Strength
NA125.00 MPa
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
0.00 (Pa)0.11 (Pa)
Tungsten
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
44.00 GPaNA
Potassium
1.3 222
7.5.2 Bulk Modulus
180.00 GPaNA
Cesium
1.6 462
7.5.3 Young's Modulus
121.00 GPaNA
Cesium
1.7 528
7.6 Poisson Ratio
0.39NA
Beryllium
0.032 0.47
7.7 Other Mechanical Properties
Ductile, Malleable, Weldable
Ductile
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
12.0220.25
Lithium
0.53 4500
8.1.2 Magnetic Ordering
Diamagnetic
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
105.40 nΩ·m1.22 nΩ·m
Thallium
0.18 961
8.2.3 Electrical Conductivity
0.10 106/cm Ω0.01 106/cm Ω
Plutonium
0.00666 0.63
8.2.4 Electron Affinity
54.23 kJ/molNA
Mercury
0 222.8
9 Thermal
9.1 Specific Heat
0.24 J/(kg K)0.12 J/(kg K)
Americium
0.11 3.6
9.2 Molar Heat Capacity
25.98 J/mol·K29.46 J/mol·K
Beryllium
16.443 62.7
9.3 Thermal Conductivity
71.80 W/m·K6.30 W/m·K
Sodium
6.3 429
9.4 Critical Temperature
NANA
Ytterbium
26.3 3223
9.5 Thermal Expansion
11.80 µm/(m·K)NA
Tungsten
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
376.60 kJ/molNA
Zinc
7.32 799.1
9.6.2 Enthalpy of Fusion
16.74 kJ/mol3.20 kJ/mol
Cesium
2.1 35.23
9.6.3 Enthalpy of Atomization
393.30 kJ/molNA
Mercury
61.5 837
9.7 Standard Molar Entropy
37.60 J/mol.KNA
Beryllium
9.5 198.1