Symbol
Nh
  
Ac
  
Group Number
Not Available
  
Period Number
7
  
7
  
Block
p block
  
f block
  
Element Family
Probably Post-Transition
  
Actinide
  
Space Group Name
Not Available
  
Fm_ 3m
  
Interesting Facts
Not Available
  
Not Available
  
Sources
Synthetically Produced
  
Obtained by Treating Radium with Neutrons, Ores of metals
  
History
  
  
Who Discovered
Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory
  
Friedrich Oskar Giesel
  
Discovery
In 2003
  
In 1902
  
Abundance
  
  
Uses & Benefits
- Currently known uses of Ununtrium metal are limited to research purpose only.
  
- Actinium metal has a great source of alpha rays but it is hardly used outside research purpose.
  
Industrial Uses
NA
  
NA
  
Medical Uses
NA
  
NA
  
Other Uses
Research Purposes
  
Alloys, Nuclear Research, Research Purposes
  
Biological Properties
  
  
Toxicity
Unknown
  
Toxic
  
Present in Human Body
No
  
No
  
In Blood
Not Available
  
0.00 Blood/mg dm-3
  
37
In Bone
Not Available
  
0.00 p.p.m.
  
36
Melting Point
1,227.00 °C
  
38
Boiling Point
1,130.00 °C
  
99+
3,200.00 °C
  
26
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Unknown
  
Silvery White
  
Luster
Unknown Luster
  
NA
  
Hardness
  
  
Speed of Sound
Not Available
  
Not Available
  
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Nh
  
Ac
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Not Available
  
Allred Rochow Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Not Available
  
Ionization Energies
  
  
1st Energy Level
704.90 kJ/mol
  
34
499.00 kJ/mol
  
99+
2nd Energy Level
2,238.50 kJ/mol
  
7
1,170.00 kJ/mol
  
99+
3rd Energy Level
3,023.30 kJ/mol
  
26
1,900.00 kJ/mol
  
99+
4th Energy Level
4,351.50 kJ/mol
  
29
4,700.00 kJ/mol
  
23
5th Energy Level
5,692.60 kJ/mol
  
28
Not Available
  
Electrochemical Equivalent
Not Available
  
2.82 g/amp-hr
  
18
Electron Work Function
Not Available
  
Not Available
  
Other Chemical Properties
Chemical Stability, Ionization
  
Ionization, Radioactive Isotopes, Radioactivity, Solubility
  
Electron Configuration
[Rn] 5f14 6d10 7s2 7p1
  
[Rn] 6d1 7s2
  
Crystal Structure
Not Known
  
Face Centered Cubic (FCC)
  
Crystal Lattice
Unknown-Crystal-Structure-of-Ununtrium.jpg#100
  
FCC-Crystal-Structure-of-Actinium.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Radius
Not Available
  
Atomic Volume
Not Available
  
22.54 cm3/mol
  
11
Adjacent Atomic Numbers
  
  
Valence Electron Potential
Not Available
  
38.60 (-eV)
  
99+
Lattice Constant
Not Available
  
Lattice Angles
NA
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
16.00 g/cm3
  
19
10.00 g/cm3
  
37
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Elasticity properties
  
  
Poisson Ratio
Not Available
  
Not Available
  
Other Mechanical Properties
Unknown
  
NA
  
Magnetic Characteristics
  
  
Specific Gravity
Not Available
  
Magnetic Ordering
Unknown
  
Paramagnetic
  
Electrical Properties
  
  
Specific Heat
Not Available
  
0.12 J/(kg K)
  
40
Molar Heat Capacity
Not Available
  
27.20 J/mol·K
  
18
Thermal Conductivity
Not Available
  
12.00 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
Not Available
  
Not Available
  
Enthalpy
  
  
Enthalpy of Atomization
Not Available
  
301.00 kJ/mol
  
36
Standard Molar Entropy
Not Available
  
56.50 J/mol.K
  
25