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Iron Gold Comparison

Iron
Gold
Gold Iron comparison


Periodic Table
Symbol
Fe   
Au   
Group Number
8   
10
11   
7
Period Number
4   
6   
Block
d block   
d block   
Element Family
Transition Metal   
Transition Metal   
CAS Number
7439896   
99+
7440575   
31
Space Group Name
Im_ 3m   
Fm_ 3m   
Space Group Number
229.00   
1
225.00   
2
Facts
Interesting Facts
  • Iron is not always magnetic in nature, its allotrope are ferromagnetic and the B allotrope is nonmagnetic.
  • The blood consists Iron in hemoglobin molecules to transfer Oxygen in the body.
  
  • It is found in copper ores and from the crust of the earth.
  • It is the most malleable and ductile metal.
  • Gold alloys are used in Dentistry as fillings, crowning, clips, etc. It is also used as an artificial limb joints.
  
Sources
Earth's crust, Found in Minerals   
Earth's crust, Mining, Ores of metals   
History
  
  
Discovery
Before 5000 BC   
Before 6000 BCE   
Abundance
  
  
Abundance In Universe
1.1 * 10-1 %   
1
6 * 10-8 %   
26
Abundance In Sun
~0.1 %   
1
~0.0000001 %   
26
Abundance In Meteorites
22.00 %   
1
0.00 %   
99+
Abundance In Earth's Crust
6.30 %   
2
0.00 %   
99+
Abundance In Oceans
0.00 %   
12
0.00 %   
21
Abundance In Humans
0.01 %   
5
0.00 %   
18
Uses
Uses & Benefits
  • Iron metal alloy steel is used in the application of civil engineering and manufacturing.
  • Alloys of iron with nickel, vanadium, chromium, tungsten and manganese have very useful properties.
  
  • Gold metal is mainly used for Jewelry, bullion, coinage, etc.
  • It is used in the art, decoration, ornaments, etc. It is also used for electroplating process.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry   
Medical Uses
Pharmaceutical Industry, Surgical Instruments Manufacturing   
Dentistry, Pharmaceutical Industry   
Other Uses
Alloys, Sculptures, Statues   
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues   
Biological Properties
  
  
Toxicity
Non Toxic   
Non Toxic   
Present in Human Body
Yes   
Yes   
In Blood
447.00 Blood/mg dm-3   
3
0.00 Blood/mg dm-3   
35
In Bone
380.00 p.p.m.   
5
0.02 p.p.m.   
30
Physical Properties
Melting Point
1,535.00 °C   
25
1,064.43 °C   
99+
Boiling Point
2,750.00 °C   
37
2,807.00 °C   
36
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Gold   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
4.00   
10
2.50   
14
Brinell Hardness
200.00 MPa   
40
194.00 MPa   
99+
Vickers Hardness
608.00 MPa   
18
216.00 MPa   
31
Speed of Sound
5,120.00 m/s   
8
2,030.00 m/s   
99+
Optical Properties
  
  
Reflectivity
65.00 %   
12
95.00 %   
2
Allotropes
Yes   
No   
α Allotropes
Ferrite (alpha Iron)   
Not Available   
β Allotropes
beta Iron   
Not Available   
γ Allotropes
gamma Iron   
Not Available   
Chemical Properties
Chemical Formula
Fe   
Au   
Isotopes
  
  
Known Isotopes
26   
13
36   
3
Electronegativity
  
  
Pauling Electronegativity
1.83   
14
2.54   
1
Sanderson Electronegativity
2.20   
7
Not Available   
Allred Rochow Electronegativity
1.64   
8
1.42   
18
Mulliken-Jaffe Electronegativity
Not Available   
1.87   
7
Allen Electronegativity
1.80   
12
1.92   
5
Electropositivity
  
  
Pauling Electropositivity
2.17   
40
1.46   
99+
Ionization Energies
  
  
1st Energy Level
762.50 kJ/mol   
17
890.10 kJ/mol   
8
2nd Energy Level
1,561.90 kJ/mol   
36
1,980.00 kJ/mol   
12
3rd Energy Level
2,957.00 kJ/mol   
29
Not Available   
4th Energy Level
5,290.00 kJ/mol   
16
Not Available   
5th Energy Level
7,240.00 kJ/mol   
16
Not Available   
6th Energy Level
9,560.00 kJ/mol   
14
Not Available   
7th Energy level
12,060.00 kJ/mol   
15
Not Available   
8th Energy Level
14,580.00 kJ/mol   
14
Not Available   
9th Energy Level
22,540.00 kJ/mol   
5
Not Available   
10th Energy Level
25,290.00 kJ/mol   
8
Not Available   
11th Energy Level
28,000.00 kJ/mol   
9
Not Available   
12th Energy Level
31,920.00 kJ/mol   
9
Not Available   
13th Energy Level
34,830.00 kJ/mol   
9
Not Available   
14th Energy Level
37,840.00 kJ/mol   
11
Not Available   
15th Energy Level
44,100.00 kJ/mol   
11
Not Available   
16th Energy Level
47,206.00 kJ/mol   
13
Not Available   
17th Energy Level
122,200.00 kJ/mol   
1
Not Available   
18th Energy Level
131,000.00 kJ/mol   
2
Not Available   
19th Energy Level
140,500.00 kJ/mol   
3
Not Available   
20th Energy Level
152,600.00 kJ/mol   
5
Not Available   
21st Energy Level
163,000.00 kJ/mol   
5
Not Available   
22nd Energy Level
173,600.00 kJ/mol   
4
Not Available   
23rd Energy Level
188,100.00 kJ/mol   
4
Not Available   
24th Energy Level
195,200.00 kJ/mol   
1
Not Available   
Electrochemical Equivalent
0.69 g/amp-hr   
99+
2.45 g/amp-hr   
21
Electron Work Function
4.70 eV   
10
5.10 eV   
4
Other Chemical Properties
Corrosion, Ionization, Solubility   
Chemical Stability, Ionization, Solubility   
Atomic Properties
Atomic Number
26   
99+
79   
37
Electron Configuration
[Ar] 3d6 4s2   
[Xe] 4f14 5d10 6s1   
Crystal Structure
Body Centered Cubic (BCC)   
Face Centered Cubic (FCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Gold.jpg#100   
Atom
  
  
Number of Protons
26   
99+
79   
37
Number of Neutrons
30   
99+
118   
23
Number of Electrons
26   
99+
79   
37
Radius of an Atom
  
  
Atomic Radius
126.00 pm   
99+
151.00 pm   
32
Covalent Radius
132.00 pm   
99+
144.00 pm   
40
Van der Waals Radius
200.00 pm   
28
166.00 pm   
39
Atomic Weight
55.85 amu   
99+
196.97 amu   
33
Atomic Volume
7.10 cm3/mol   
99+
10.20 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Manganese
  
Platinum
  
Next Element
Cobalt
  
Mercury
  
Valence Electron Potential
67.00 (-eV)   
20
43.40 (-eV)   
99+
Lattice Constant
286.65 pm   
99+
407.82 pm   
21
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
1.61   
4
Mechanical Properties
Density
  
  
Density At Room Temperature
7.87 g/cm3   
99+
19.30 g/cm3   
15
Density When Liquid (at m.p.)
6.98 g/cm3   
35
17.31 g/cm3   
6
Tensile Strength
11,000.00 MPa   
1
120.00 MPa   
15
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
28
0.00 (Pa)   
23
Vapor Pressure at 2000 K
36.80 (Pa)   
5
67.00 (Pa)   
4
Elasticity properties
  
  
Shear Modulus
82.00 GPa   
11
27.00 GPa   
27
Bulk Modulus
170.00 GPa   
10
180.00 GPa   
9
Young's Modulus
211.00 GPa   
9
79.00 GPa   
24
Poisson Ratio
0.29   
15
0.40   
4
Other Mechanical Properties
Ductile, Malleable, Weldable   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.20   
99+
19.32   
8
Magnetic Ordering
Ferromagnetic   
Diamagnetic   
Permeability
6.3 * 10-3 H/m   
1
Not Available   
Susceptibility
2,00,000.00   
1
Not Available   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
96.10 nΩ·m   
32
2.20 nΩ·m   
99+
Electrical Conductivity
0.10 106/cm Ω   
20
0.45 106/cm Ω   
3
Electron Affinity
15.70 kJ/mol   
34
222.80 kJ/mol   
1
Thermal Properties
Specific Heat
0.44 J/(kg K)   
13
0.13 J/(kg K)   
39
Molar Heat Capacity
25.10 J/mol·K   
99+
25.42 J/mol·K   
40
Thermal Conductivity
80.40 W/m·K   
22
318.00 W/m·K   
3
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
11.80 µm/(m·K)   
33
14.20 µm/(m·K)   
26
Enthalpy
  
  
Enthalpy of Vaporization
351.00 kJ/mol   
23
324.40 kJ/mol   
27
Enthalpy of Fusion
14.90 kJ/mol   
22
12.55 kJ/mol   
27
Enthalpy of Atomization
414.20 kJ/mol   
19
364.00 kJ/mol   
25
Standard Molar Entropy
27.30 J/mol.K   
99+
47.40 J/mol.K   
32
Summary >>
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