Symbol
Pa
  
Cu
  
Group Number
Not Available
  
Period Number
7
  
4
  
Block
f block
  
d block
  
Element Family
Actinide
  
Transition Metal
  
Space Group Name
I4/mmm
  
Fm_ 3m
  
Interesting Facts
- Protactinium metal has 29 isotopes.
- Isotopes of Protactinium-231 used in nuclear weapon.
  
- Copper rarely found in its pure form in nature.
- Copper Sulfate is mostly used in agricultural poison and as an algicide in water purification system.
  
Sources
Found in Uranium Ores, Mining, Ores of metals
  
Found in Minerals
  
History
  
  
Who Discovered
William Crookes
  
Unknown
  
Discovery
In 1900
  
In Middle East (9000 BCE)
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Abundance In Humans
Not Available
  
Uses & Benefits
- Currently known uses of Protactinium metal are limited to research purpose only.
  
- It is use for coinage and bullion.
- Most of copper element is used in manufacturing electrical and electronic equipments such as wirings and components. It is also used in construction and industrial machine.
  
Industrial Uses
NA
  
Chemical Industry, Electronic Industry
  
Medical Uses
NA
  
NA
  
Other Uses
NA
  
Alloys, Coinage, Jewellery
  
Biological Properties
  
  
Toxicity
Highly Toxic
  
Non Toxic
  
Present in Human Body
No
  
Yes
  
In Blood
0.00 Blood/mg dm-3
  
37
1.01 Blood/mg dm-3
  
8
In Bone
0.00 p.p.m.
  
36
26.00 p.p.m.
  
12
Melting Point
1,568.00 °C
  
21
1,084.62 °C
  
40
Boiling Point
4,027.00 °C
  
12
2,562.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silver
  
Copper
  
Luster
Metallic
  
NA
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
Vickers Hardness
Not Available
  
Speed of Sound
Not Available
  
3,810.00 m/s
  
19
Optical Properties
  
  
Reflectivity
Not Available
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Pa
  
Cu
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
568.00 kJ/mol
  
99+
745.50 kJ/mol
  
22
2nd Energy Level
1,128.00 kJ/mol
  
99+
1,957.90 kJ/mol
  
15
3rd Energy Level
1,814.00 kJ/mol
  
99+
3,555.00 kJ/mol
  
15
4th Energy Level
2,991.00 kJ/mol
  
99+
5,536.00 kJ/mol
  
12
5th Energy Level
Not Available
  
7,700.00 kJ/mol
  
11
6th Energy Level
Not Available
  
9,900.00 kJ/mol
  
10
7th Energy level
Not Available
  
13,400.00 kJ/mol
  
7
8th Energy Level
Not Available
  
16,000.00 kJ/mol
  
9
9th Energy Level
Not Available
  
19,200.00 kJ/mol
  
9
10th Energy Level
Not Available
  
22,400.00 kJ/mol
  
11
11th Energy Level
Not Available
  
25,600.00 kJ/mol
  
13
12th Energy Level
Not Available
  
35,600.00 kJ/mol
  
6
13th Energy Level
Not Available
  
38,700.00 kJ/mol
  
6
14th Energy Level
Not Available
  
42,000.00 kJ/mol
  
7
15th Energy Level
Not Available
  
46,700.00 kJ/mol
  
9
16th Energy Level
Not Available
  
50,200.00 kJ/mol
  
10
17th Energy Level
Not Available
  
53,700.00 kJ/mol
  
12
18th Energy Level
Not Available
  
61,100.00 kJ/mol
  
10
19th Energy Level
Not Available
  
64,702.00 kJ/mol
  
11
20th Energy Level
Not Available
  
163,700.00 kJ/mol
  
2
21st Energy Level
Not Available
  
174,100.00 kJ/mol
  
2
22nd Energy Level
Not Available
  
184,900.00 kJ/mol
  
1
23rd Energy Level
Not Available
  
198,800.00 kJ/mol
  
1
Electrochemical Equivalent
1.72 g/amp-hr
  
99+
1.19 g/amp-hr
  
99+
Electron Work Function
Not Available
  
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
  
Chemical Stability, Corrosion, Ionization, Solubility
  
Electron Configuration
[Rn] 5f2 6d1 7s2
  
[Ar] 3d10 4s1
  
Crystal Structure
Tetragonal (TETR)
  
Face Centered Cubic (FCC)
  
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100
  
FCC-Crystal-Structure-of-Copper.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Volume
15.00 cm3/mol
  
34
7.10 cm3/mol
  
99+
Adjacent Atomic Numbers
  
  
Valence Electron Potential
92.00 (-eV)
  
11
34.00 (-eV)
  
99+
Lattice Angles
π/2, π/2, π/2
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
15.37 g/cm3
  
20
8.96 g/cm3
  
99+
Density When Liquid (at m.p.)
Not Available
  
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
Unknown
  
Ductile, Malleable
  
Magnetic Characteristics
  
  
Magnetic Ordering
Paramagnetic
  
Diamagnetic
  
Permeability
Not Available
  
1.256629 * 10
-6 H/m
  
5
Susceptibility
Not Available
  
-9.63 * 10
-6
  
4
Electrical Properties
  
  
Electrical Property
Conductor
  
Conductor
  
Resistivity
177.00 nΩ·m
  
21
16.78 nΩ·m
  
99+
Electrical Conductivity
0.05 106/cm Ω
  
34
0.60 106/cm Ω
  
2
Electron Affinity
Not Available
  
222.80 kJ/mol
  
1
Specific Heat
0.12 J/(kg K)
  
40
0.38 J/(kg K)
  
15
Molar Heat Capacity
Not Available
  
24.44 J/mol·K
  
99+
Thermal Conductivity
47.00 W/m·K
  
32
401.00 W/m·K
  
2
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
9.90 µm/(m·K)
  
40
16.50 µm/(m·K)
  
25
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
283.70 kJ/mol
  
33
Enthalpy of Fusion
12.34 kJ/mol
  
28
7.11 kJ/mol
  
99+
Enthalpy of Atomization
Not Available
  
338.90 kJ/mol
  
29
Standard Molar Entropy
198.10 J/mol.K
  
1
33.20 J/mol.K
  
99+