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Actinium vs Nihonium

Actinium
Nihonium
Nihonium vs Actinium


Periodic Table
Symbol
Ac  
Nh  
Group Number
3  
15
13  
5
Period Number
7  
7  
Block
f block  
p block  
Element Family
Actinide  
Probably Post-​Transition  
CAS Number
7440348  
99+
54084707  
6
Space Group Name
Fm_ 3m  
-  
Space Group Number
225.00  
3
194.00  
7
Facts
Interesting Facts
Actinium glows in the dark due to its radioactivity.  
Nihonium is a synthetic chemical element and is highly radioactive.  
Sources
Obtained by Treating Radium with Neutrons, Ores of metals  
Synthetically Produced  
History
  
  
Who Discovered
Friedrich Oskar Giesel  
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory  
Discovery
In 1902  
In 2003  
Abundance
  
  
Abundance In Universe
0.00 %  
34
0.00 %  
40
Abundance In Sun
0.00 %  
26
-  
Abundance In Meteorites
0.00 %  
99+
-  
Abundance In Earth's Crust
0.00 %  
99+
-  
Abundance In Oceans
0.00 %  
99+
-  
Abundance In Humans
0.00 %  
24
-  
Uses
Uses & Benefits
  • Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
  
  • Currently known uses of Ununtrium metal are limited to research purpose only.
  
Industrial Uses
-  
-  
Medical Uses
-  
-  
Other Uses
Alloys, Nuclear Research, Research Purposes  
Research Purposes  
Biological Properties
  
  
Toxicity
Toxic  
-  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
29
In Bone
0.00 p.p.m.  
99+
0.20 p.p.m.  
27
Physical
Melting Point
1,227.00 °C  
38
430.00 °C  
99+
Boiling Point
3,200.00 °C  
27
1,130.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
-  
Luster
-  
Unknown Luster  
Hardness
  
  
Mohs Hardness
6.50  
5
-  
Brinell Hardness
70.00 MPa  
99+
600.00 MPa  
24
Vickers Hardness
260.00 MPa  
99+
350.00 MPa  
99+
Speed of Sound
3,430.00 m/s  
32
3,600.00 m/s  
29
Optical Properties
  
  
Refractive Index
1.00  
99+
1.30  
99+
Reflectivity
62.00 %  
21
60.00 %  
23
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Ac  
Nh  
Isotopes
  
  
Known Isotopes
29  
10
7  
31
Electronegativity
  
  
Pauling Electronegativity
1.10  
99+
1.30  
33
Sanderson Electronegativity
1.10  
38
1.90  
13
Allred Rochow Electronegativity
1.00  
37
1.30  
25
Mulliken-Jaffe Electronegativity
1.10  
99+
1.00  
99+
Allen Electronegativity
1.10  
99+
0.70  
99+
Electropositivity
  
  
Pauling Electropositivity
2.90  
10
2.20  
39
Ionization Energies
  
  
1st Energy Level
499.00 kJ/mol  
99+
704.90 kJ/mol  
34
2nd Energy Level
1,170.00 kJ/mol  
99+
2,238.50 kJ/mol  
7
3rd Energy Level
1,900.00 kJ/mol  
99+
3,023.30 kJ/mol  
26
4th Energy Level
4,700.00 kJ/mol  
33
4,351.50 kJ/mol  
39
5th Energy Level
4,990.00 kJ/mol  
99+
5,692.60 kJ/mol  
99+
6th Energy Level
5,750.00 kJ/mol  
99+
7,000.00 kJ/mol  
99+
7th Energy level
5,750.00 kJ/mol  
99+
7,040.00 kJ/mol  
40
8th Energy Level
5,750.00 kJ/mol  
99+
7,040.00 kJ/mol  
36
9th Energy Level
4,990.00 kJ/mol  
99+
7,040.00 kJ/mol  
33
10th Energy Level
4,990.00 kJ/mol  
99+
7,040.00 kJ/mol  
37
11th Energy Level
4,990.00 kJ/mol  
99+
7,040.00 kJ/mol  
35
12th Energy Level
49,900.00 kJ/mol  
21
70,000.00 kJ/mol  
5
13th Energy Level
4,990.00 kJ/mol  
99+
7,000.00 kJ/mol  
34
14th Energy Level
4,990.00 kJ/mol  
99+
7,000.00 kJ/mol  
24
15th Energy Level
49,900.00 kJ/mol  
99+
70,000.00 kJ/mol  
30
16th Energy Level
49,900.00 kJ/mol  
99+
70,000.00 kJ/mol  
25
17th Energy Level
499.00 kJ/mol  
99+
540.00 kJ/mol  
99+
18th Energy Level
4,990.00 kJ/mol  
99+
3,200.00 kJ/mol  
99+
19th Energy Level
499.00 kJ/mol  
99+
540.20 kJ/mol  
99+
20th Energy Level
499.00 kJ/mol  
99+
700.00 kJ/mol  
36
21st Energy Level
4,990.00 kJ/mol  
25
1,130.00 kJ/mol  
29
22nd Energy Level
499.00 kJ/mol  
99+
558.00 kJ/mol  
99+
23rd Energy Level
4,990.00 kJ/mol  
29
7,000.00 kJ/mol  
11
24th Energy Level
499.00 kJ/mol  
99+
700.00 kJ/mol  
29
25th Energy Level
499.00 kJ/mol  
99+
0.00 kJ/mol  
99+
26th Energy Level
499.00 kJ/mol  
99+
586.20 kJ/mol  
99+
27th Energy Level
499.00 kJ/mol  
99+
704.90 kJ/mol  
28
28th Energy Level
499.00 kJ/mol  
99+
704.90 kJ/mol  
33
29th Energy Level
499.00 kJ/mol  
99+
704.90 kJ/mol  
34
30th Energy Level
499.00 kJ/mol  
99+
704.00 kJ/mol  
28
Electrochemical Equivalent
2.82 g/amp-hr  
22
3.00 g/amp-hr  
21
Electron Work Function
4.38 eV  
23
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Chemical Stability, Ionization  
Atomic
Atomic Number
89  
29
113  
5
Electron Configuration
[Rn] 6d1 7s2  
[Rn] 5f14 6d10 7s2 7p1  
Crystal Structure
Face Centered Cubic (FCC)  
Not Known  
Crystal Lattice
FCC-Crystal-Structure-of-Actinium.jpg#100  
Unknown-Crystal-Structure-of-Ununtrium.jpg#100  
Atom
  
  
Number of Protons
89  
29
113  
5
Number of Neutrons
138  
17
150  
12
Number of Electrons
89  
29
113  
5
Radius of an Atom
  
  
Atomic Radius
195.00 pm  
9
170.00 pm  
24
Covalent Radius
186.00 pm  
21
170.00 pm  
27
Van der Waals Radius
215.00 pm  
31
320.00 pm  
3
Atomic Weight
227.00 amu  
25
286.00 amu  
4
Atomic Volume
22.54 cm3/mol  
20
21.10 cm3/mol  
24
Adjacent Atomic Numbers
  
  
Previous Element
Radium
  
Copernicium
  
Next Element
Thorium
  
Flerovium
  
Valence Electron Potential
38.60 (-eV)  
99+
6.20 (-eV)  
99+
Lattice Constant
567.00 pm  
9
0.00 pm  
99+
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.89  
2
1.58  
35
Mechanical
Density
  
  
Density At Room Temperature
10.00 g/cm3  
40
16.00 g/cm3  
19
Density When Liquid (at m.p.)
10.07 g/cm3  
40
16.00 g/cm3  
19
Tensile Strength
65.00 MPa  
33
80.00 MPa  
29
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
30
0.00 (Pa)  
37
Elasticity properties
  
  
Shear Modulus
25.00 GPa  
38
40.00 GPa  
19
Bulk Modulus
94.00 GPa  
17
0.00 GPa  
99+
Young's Modulus
130.00 GPa  
16
12.20 GPa  
99+
Poisson Ratio
0.34  
10
0.30  
14
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
10.07  
99+
16.00  
21
Magnetic Ordering
Paramagnetic  
-  
Permeability
0.00 H/m  
17
0.00 H/m  
5
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
5.20 nΩ·m  
99+
0.32 nΩ·m  
99+
Electrical Conductivity
0.15 106/cm Ω  
13
0.00 106/cm Ω  
99+
Electron Affinity
33.20 kJ/mol  
34
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.12 J/(kg K)  
99+
Molar Heat Capacity
27.20 J/mol·K  
24
27.00 J/mol·K  
29
Thermal Conductivity
12.00 W/m·K  
99+
1.70 W/m·K  
99+
Critical Temperature
1,323.00 K  
99+
700.00 K  
99+
Thermal Expansion
12.10 µm/(m·K)  
99+
6.20 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
120.00 kJ/mol  
99+
410.80 kJ/mol  
23
Enthalpy of Fusion
14.20 kJ/mol  
28
-  
Enthalpy of Atomization
301.00 kJ/mol  
99+
320.70 kJ/mol  
99+
Standard Molar Entropy
56.50 J/mol.K  
33
65.00 J/mol.K  
17
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