Home
 Compare Metals

Actinium vs Gold

Actinium
Gold
Gold vs Actinium


Periodic Table
Symbol
Ac  
Au  
Group Number
3  
15
11  
7
Period Number
7  
6  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7440348  
99+
7440575  
31
Space Group Name
Fm_ 3m  
Fm_ 3m  
Space Group Number
225.00  
3
225.00  
3
Facts
Interesting Facts
Actinium glows in the dark due to its radioactivity.  
  • 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
Obtained by Treating Radium with Neutrons, Ores of metals  
Earth's crust, Mining, Ores of metals  
History
  
  
Who Discovered
Friedrich Oskar Giesel  
-  
Discovery
In 1902  
Before 6000 BCE  
Abundance
  
  
Abundance In Universe
0.00 %  
34
0.00 %  
27
Abundance In Sun
0.00 %  
26
0.00 %  
26
Abundance In Meteorites
0.00 %  
99+
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
0.00 %  
99+
0.00 %  
21
Abundance In Humans
0.00 %  
24
0.00 %  
21
Uses
Uses & Benefits
  • Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
  
  • 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
-  
Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
Dentistry, Pharmaceutical Industry  
Other Uses
Alloys, Nuclear Research, Research Purposes  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Toxic  
Non Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
38
In Bone
0.00 p.p.m.  
99+
0.02 p.p.m.  
35
Physical
Melting Point
1,227.00 °C  
38
1,064.43 °C  
99+
Boiling Point
3,200.00 °C  
27
2,807.00 °C  
37
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Gold  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
6.50  
5
2.50  
15
Brinell Hardness
70.00 MPa  
99+
194.00 MPa  
99+
Vickers Hardness
260.00 MPa  
99+
216.00 MPa  
99+
Speed of Sound
3,430.00 m/s  
32
2,030.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.00  
99+
0.47  
99+
Reflectivity
62.00 %  
21
95.00 %  
2
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ac  
Au  
Isotopes
  
  
Known Isotopes
29  
10
36  
3
Electronegativity
  
  
Pauling Electronegativity
1.10  
99+
2.54  
2
Sanderson Electronegativity
1.10  
38
1.50  
18
Allred Rochow Electronegativity
1.00  
37
1.42  
19
Mulliken-Jaffe Electronegativity
1.10  
99+
1.87  
15
Allen Electronegativity
1.10  
99+
1.92  
7
Electropositivity
  
  
Pauling Electropositivity
2.90  
10
1.46  
99+
Ionization Energies
  
  
1st Energy Level
499.00 kJ/mol  
99+
890.10 kJ/mol  
8
2nd Energy Level
1,170.00 kJ/mol  
99+
1,980.00 kJ/mol  
12
3rd Energy Level
1,900.00 kJ/mol  
99+
2,856.00 kJ/mol  
33
4th Energy Level
4,700.00 kJ/mol  
33
890.10 kJ/mol  
99+
5th Energy Level
4,990.00 kJ/mol  
99+
8,901.00 kJ/mol  
6
6th Energy Level
5,750.00 kJ/mol  
99+
8,901.00 kJ/mol  
24
7th Energy level
5,750.00 kJ/mol  
99+
8,901.00 kJ/mol  
21
8th Energy Level
5,750.00 kJ/mol  
99+
8,900.00 kJ/mol  
20
9th Energy Level
4,990.00 kJ/mol  
99+
8,901.00 kJ/mol  
20
10th Energy Level
4,990.00 kJ/mol  
99+
8,901.00 kJ/mol  
21
11th Energy Level
4,990.00 kJ/mol  
99+
8,901.00 kJ/mol  
19
12th Energy Level
49,900.00 kJ/mol  
21
8,900.00 kJ/mol  
39
13th Energy Level
4,990.00 kJ/mol  
99+
8,900.00 kJ/mol  
14
14th Energy Level
4,990.00 kJ/mol  
99+
890.10 kJ/mol  
99+
15th Energy Level
49,900.00 kJ/mol  
99+
89,000.00 kJ/mol  
7
16th Energy Level
49,900.00 kJ/mol  
99+
890.10 kJ/mol  
99+
17th Energy Level
499.00 kJ/mol  
99+
890.10 kJ/mol  
25
18th Energy Level
4,990.00 kJ/mol  
99+
8,901.00 kJ/mol  
14
19th Energy Level
499.00 kJ/mol  
99+
890.10 kJ/mol  
23
20th Energy Level
499.00 kJ/mol  
99+
890.00 kJ/mol  
13
21st Energy Level
4,990.00 kJ/mol  
25
890.10 kJ/mol  
35
22nd Energy Level
499.00 kJ/mol  
99+
890.00 kJ/mol  
11
23rd Energy Level
4,990.00 kJ/mol  
29
890.10 kJ/mol  
38
24th Energy Level
499.00 kJ/mol  
99+
890.10 kJ/mol  
6
25th Energy Level
499.00 kJ/mol  
99+
890.00 kJ/mol  
5
26th Energy Level
499.00 kJ/mol  
99+
890.10 kJ/mol  
5
27th Energy Level
499.00 kJ/mol  
99+
890.10 kJ/mol  
4
28th Energy Level
499.00 kJ/mol  
99+
890.10 kJ/mol  
7
29th Energy Level
499.00 kJ/mol  
99+
890.10 kJ/mol  
8
30th Energy Level
499.00 kJ/mol  
99+
890.10 kJ/mol  
5
Electrochemical Equivalent
2.82 g/amp-hr  
22
2.45 g/amp-hr  
25
Electron Work Function
4.38 eV  
23
5.10 eV  
8
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Chemical Stability, Ionization, Solubility  
Atomic
Atomic Number
89  
29
79  
37
Electron Configuration
[Rn] 6d1 7s2  
[Xe] 4f14 5d10 6s1  
Crystal Structure
Face Centered Cubic (FCC)  
Face Centered Cubic (FCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Actinium.jpg#100  
FCC-Crystal-Structure-of-Gold.jpg#100  
Atom
  
  
Number of Protons
89  
29
79  
37
Number of Neutrons
138  
17
118  
24
Number of Electrons
89  
29
79  
37
Radius of an Atom
  
  
Atomic Radius
195.00 pm  
9
151.00 pm  
34
Covalent Radius
186.00 pm  
21
144.00 pm  
99+
Van der Waals Radius
215.00 pm  
31
166.00 pm  
99+
Atomic Weight
227.00 amu  
25
196.97 amu  
33
Atomic Volume
22.54 cm3/mol  
20
10.20 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Radium
  
Platinum
  
Next Element
Thorium
  
Mercury
  
Valence Electron Potential
38.60 (-eV)  
99+
43.40 (-eV)  
99+
Lattice Constant
567.00 pm  
9
407.82 pm  
24
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.89  
2
1.61  
18
Mechanical
Density
  
  
Density At Room Temperature
10.00 g/cm3  
40
19.30 g/cm3  
15
Density When Liquid (at m.p.)
10.07 g/cm3  
40
17.31 g/cm3  
16
Tensile Strength
65.00 MPa  
33
120.00 MPa  
27
Viscosity
0.00  
25
0.00  
23
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
25
Vapor Pressure at 2000 K
0.00 (Pa)  
30
67.00 (Pa)  
4
Elasticity properties
  
  
Shear Modulus
25.00 GPa  
38
27.00 GPa  
34
Bulk Modulus
94.00 GPa  
17
180.00 GPa  
9
Young's Modulus
130.00 GPa  
16
79.00 GPa  
26
Poisson Ratio
0.34  
10
0.40  
4
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
10.07  
99+
19.32  
17
Magnetic Ordering
Paramagnetic  
Diamagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
10
Susceptibility
0.00  
24
0.00  
22
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
5.20 nΩ·m  
99+
2.20 nΩ·m  
99+
Electrical Conductivity
0.15 106/cm Ω  
13
0.45 106/cm Ω  
3
Electron Affinity
33.20 kJ/mol  
34
222.80 kJ/mol  
1
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.13 J/(kg K)  
40
Molar Heat Capacity
27.20 J/mol·K  
24
25.42 J/mol·K  
99+
Thermal Conductivity
12.00 W/m·K  
99+
318.00 W/m·K  
3
Critical Temperature
1,323.00 K  
99+
1,337.00 K  
99+
Thermal Expansion
12.10 µm/(m·K)  
99+
14.20 µm/(m·K)  
29
Enthalpy
  
  
Enthalpy of Vaporization
120.00 kJ/mol  
99+
324.40 kJ/mol  
99+
Enthalpy of Fusion
14.20 kJ/mol  
28
12.55 kJ/mol  
33
Enthalpy of Atomization
301.00 kJ/mol  
99+
364.00 kJ/mol  
34
Standard Molar Entropy
56.50 J/mol.K  
33
47.40 J/mol.K  
99+
Periodic Table >>
<< All

Compare Actinide Series

Actinide Series

Actinide Series

» More Actinide Series

Compare Actinide Series

» More Compare Actinide Series
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!