1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
1.6 CAS Number
74399987440702
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
Not Available
- Calcium ranks 5th rank in the list of earth’s abundance Percentage.
- It is found in the compound state.
- Gypsum or calcium sulfate is used as plaster and plaster of paris.
2.2 Sources
Made by Bombarding Uranium with Neutrons, Ores of metals
Earth's crust, Found in Minerals, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
Edwin McMillan and Philip H. Abelson
Humphry Davy
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
2.4.2 Abundance In Sun
~-9999 %~0.007 %
1E-08
0.1
2.4.3 Abundance In Meteorites
2.4.4 Abundance In Earth's Crust
2.4.5 Abundance In Oceans
2.4.6 Abundance In Humans
3 Uses
3.1 Uses & Benefits
- Currently known uses of Neptunium metal are limited to research purpose only.
-
Neptunium’s isotope neptunium-237 is used as a neutron detectors.
- It is used as a reducing agent while preparing metals like thorium and uranium. It is also used as an alloying agent for metals such as aluminum, copper & lead.
- Calcium carbonate or lime stone is used in cement.
3.1.1 Industrial Uses
3.1.2 Medical Uses
NA
Dentistry, Pharmaceutical Industry
3.1.3 Other Uses
Alloys, Nuclear Research, Research Purposes
Alloys
3.2 Biological Properties
3.2.1 Toxicity
3.2.2 Present in Human Body
3.2.3 In Blood
0.00 Blood/mg dm-360.50 Blood/mg dm-3
0
1970
3.2.4 In Bone
0.00 p.p.m.170,000.00 p.p.m.
0
170000
4 Physical
4.1 Melting Point
640.00 °C839.00 °C
27
3410
4.2 Boiling Point
3,902.00 °C1,484.00 °C
147
5660
4.3 Appearance
4.3.1 Physical State
4.3.2 Color
4.3.3 Luster
4.4 Hardness
4.4.1 Mohs Hardness
4.4.2 Brinell Hardness
4.4.3 Vickers Hardness
4.5 Speed of Sound
4.6 Optical Properties
4.6.1 Refractive Index
4.6.2 Reflectivity
4.7 Allotropes
4.7.1 α Allotropes
Not Available
Not Available
4.7.2 β Allotropes
Not Available
Not Available
4.7.3 γ Allotropes
Not Available
Not Available
5 Chemical
5.1 Chemical Formula
5.2 Isotopes
5.2.1 Known Isotopes
5.3 Electronegativity
5.3.1 Pauling Electronegativity
5.3.2 Sanderson Electronegativity
5.3.3 Allred Rochow Electronegativity
5.3.4 Mulliken-Jaffe Electronegativity
5.3.5 Allen Electronegativity
5.4 Electropositivity
5.4.1 Pauling Electropositivity
5.5 Ionization Energies
5.5.1 1st Energy Level
604.50 kJ/mol589.80 kJ/mol
375.7
26130
5.5.2 2nd Energy Level
1,128.00 kJ/mol1,145.40 kJ/mol
710.2162
28750
5.5.3 3rd Energy Level
1,997.00 kJ/mol4,912.40 kJ/mol
1600
34230
5.5.4 4th Energy Level
3,242.00 kJ/mol6,491.00 kJ/mol
2780
37066
5.5.5 5th Energy Level
NA8,153.00 kJ/mol
4305.2
97510
5.5.6 6th Energy Level
NA10,496.00 kJ/mol
5715.8
105800
5.5.7 7th Energy level
NA12,270.00 kJ/mol
7226.8
114300
5.5.8 8th Energy Level
NA14,206.00 kJ/mol
8857.4
125300
5.5.9 9th Energy Level
NA18,191.00 kJ/mol
14110
134700
5.5.10 10th Energy Level
NA20,385.00 kJ/mol
17100
144300
5.5.11 11th Energy Level
NA57,110.00 kJ/mol
19900
169988
5.5.12 12th Energy Level
NA63,410.00 kJ/mol
22219
189368
5.5.13 13th Energy Level
NA70,110.00 kJ/mol
26930
76015
5.5.14 14th Energy Level
NA78,890.00 kJ/mol
29196
86450
5.5.15 15th Energy Level
NA86,310.00 kJ/mol
41987
97510
5.5.16 16th Energy Level
NA94,000.00 kJ/mol
47206
109480
5.5.17 17th Energy Level
NA104,900.00 kJ/mol
52737
122200
5.5.18 18th Energy Level
NA111,711.00 kJ/mol
58570
134810
5.5.19 19th Energy Level
5.5.20 20th Energy Level
5.5.21 21st Energy Level
5.5.22 22nd Energy Level
5.5.23 23rd Energy Level
5.5.24 24th Energy Level
5.5.25 25th Energy Level
5.5.26 26th Energy Level
5.5.27 27th Energy Level
5.5.28 28th Energy Level
5.5.29 29th Energy Level
5.5.30 30th Energy Level
5.6 Electrochemical Equivalent
1.77 g/amp-hr0.75 g/amp-hr
0.16812
8.3209
5.7 Electron Work Function
5.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Flammability, Ionization, Solubility
6 Atomic
6.1 Atomic Number
6.2 Electron Configuration
[Rn] 5f4 6d1 7s2
[Ar] 4s2
6.3 Crystal Structure
Orthorhombic (ORTH)
Face Centered Cubic (FCC)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
6.4.2 Number of Neutrons
6.4.3 Number of Electrons
6.5 Radius of an Atom
6.5.1 Atomic Radius
155.00 pm197.00 pm
112
265
6.5.2 Covalent Radius
190.00 pm176.00 pm
96
260
6.5.3 Van der Waals Radius
221.00 pm231.00 pm
139
348
6.6 Atomic Weight
237.00 amu40.08 amu
6.94
294
6.7 Atomic Volume
11.62 cm3/mol29.90 cm3/mol
1.39
71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
96.00 (-eV)29.00 (-eV)
8
392.42
6.10 Lattice Constant
666.30 pm558.84 pm
228.58
891.25
6.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
6.12 Lattice C/A Ratio
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
19.38 g/cm31.55 g/cm3
0.534
40.7
7.1.2 Density When Liquid (at m.p.)
7.2 Tensile Strength
7.3 Viscosity
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
NA25.50 (Pa)
2.47E-11
121
7.4.2 Vapor Pressure at 2000 K
7.5 Elasticity properties
7.5.1 Shear Modulus
7.5.2 Bulk Modulus
7.5.3 Young's Modulus
7.6 Poisson Ratio
7.7 Other Mechanical Properties
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
8.1.2 Magnetic Ordering
8.1.3 Permeability
8.1.4 Susceptibility
8.2 Electrical Properties
8.2.1 Electrical Property
8.2.2 Resistivity
1.22 nΩ·m33.60 nΩ·m
0.18
961
8.2.3 Electrical Conductivity
0.01 106/cm Ω0.30 106/cm Ω
0.00666
0.63
8.2.4 Electron Affinity
9 Thermal
9.1 Specific Heat
0.12 J/(kg K)0.63 J/(kg K)
0.11
3.6
9.2 Molar Heat Capacity
29.46 J/mol·K25.93 J/mol·K
16.443
62.7
9.3 Thermal Conductivity
6.30 W/m·K201.00 W/m·K
6.3
429
9.4 Critical Temperature
9.5 Thermal Expansion
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
NA150.00 kJ/mol
7.32
799.1
9.6.2 Enthalpy of Fusion
3.20 kJ/mol8.54 kJ/mol
2.1
35.23
9.6.3 Enthalpy of Atomization
9.7 Standard Molar Entropy
NA41.60 J/mol.K
9.5
198.1