1 Periodic Table
1.1 Symbol
1.2 Group Number
1.3 Period Number
1.4 Block
1.5 Element Family
Alkaline Earth
Lanthanide
1.6 CAS Number
74402467440100
7429905
54386242
1.7 Space Group Name
1.8 Space Group Number
2 Facts
2.1 Interesting Facts
- Strontium element is softer than Calcium.
- Silvery Strontium turns yellow, if exposed to air.
- Praseodymium metal is synthetically produced metal.
- Praseodymium is used as possible fuel for radioactive generators.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining, Ores of Minerals
2.3 History
2.3.1 Who Discovered
William Cruickshank
Not Available
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
4 * 10-6 %2 * 10-7 %
5E-09
0.11
2.4.2 Abundance In Sun
~0.000005 %~0.0000001 %
1E-08
0.1
2.4.3 Abundance In Meteorites
1.2.1 Abundance In Earth's Crust
1.2.2 Abundance In Oceans
1.3.1 Abundance In Humans
2 Uses
2.1 Uses & Benefits
- Strontium metal is used to producing ferrite magnets as well as refining zinc.
-
By-product of nuclear reactors called Strontium-90 is a radioactive isotope; it is absorbed by tissues and destroys bone marrow and cancer growth.
- The main use of Praseodymium include alloys. Praseodymium –Magnesium alloy is used in aircraft engines due to its high strength.
-
This metal is also used while making a permanent magnets.
2.1.1 Industrial Uses
Ammunition Industry, Chemical Industry
Chemical Industry
2.1.2 Medical Uses
2.1.3 Other Uses
2.2 Biological Properties
2.2.1 Toxicity
Non Toxic
Moderately Toxic
2.2.2 Present in Human Body
2.2.3 In Blood
0.03 Blood/mg dm-3NA
0
1970
2.2.4 In Bone
3 Physical
3.1 Melting Point
769.00 °C935.00 °C
27
3410
3.2 Boiling Point
1,384.00 °C3,130.00 °C
147
5660
3.5 Appearance
3.5.1 Physical State
3.5.2 Color
Silvery White
Grayish White
3.5.3 Luster
3.6 Hardness
3.6.1 Mohs Hardness
3.6.2 Brinell Hardness
4.4.2 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
5.3.4 Allred Rochow Electronegativity
5.3.5 Mulliken-Jaffe Electronegativity
5.3.7 Allen Electronegativity
6.3 Electropositivity
6.3.1 Pauling Electropositivity
7.2 Ionization Energies
7.2.1 1st Energy Level
549.50 kJ/mol527.00 kJ/mol
375.7
26130
7.4.2 2nd Energy Level
1,064.20 kJ/mol1,020.00 kJ/mol
710.2162
28750
7.5.3 3rd Energy Level
4,138.00 kJ/mol2,086.00 kJ/mol
1600
34230
7.5.5 4th Energy Level
5,500.00 kJ/mol3,761.00 kJ/mol
2780
37066
7.6.1 5th Energy Level
6,910.00 kJ/mol5,551.00 kJ/mol
4305.2
97510
7.6.2 6th Energy Level
8,760.00 kJ/molNA
5715.8
105800
7.6.3 7th Energy level
10,230.00 kJ/molNA
7226.8
114300
7.7.2 8th Energy Level
11,800.00 kJ/molNA
8857.4
125300
7.7.3 9th Energy Level
15,600.00 kJ/molNA
14110
134700
7.7.5 10th Energy Level
17,100.00 kJ/molNA
17100
144300
7.7.6 11th Energy Level
31,270.00 kJ/molNA
19900
169988
8.2.2 12th Energy Level
8.2.3 13th Energy Level
8.3.2 14th Energy Level
8.3.3 15th Energy Level
8.3.5 16th Energy Level
8.3.7 17th Energy Level
8.3.9 18th Energy Level
8.3.10 19th Energy Level
8.3.12 20th Energy Level
8.4.2 21st Energy Level
8.4.3 22nd Energy Level
8.5.2 23rd Energy Level
8.5.4 24th Energy Level
8.5.5 25th Energy Level
8.5.7 26th Energy Level
8.5.9 27th Energy Level
8.5.10 28th Energy Level
8.5.12 29th Energy Level
8.5.14 30th Energy Level
8.6 Electrochemical Equivalent
1.64 g/amp-hr1.75 g/amp-hr
0.16812
8.3209
8.7 Electron Work Function
8.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Anti Corrosion, Ionization, Radioactive Isotopes
9 Atomic
9.1 Atomic Number
9.2 Electron Configuration
9.3 Crystal Structure
Face Centered Cubic (FCC)
Hexagonal Close Packed (HCP)
9.3.1 Crystal Lattice
9.4 Atom
9.4.1 Number of Protons
9.4.4 Number of Neutrons
9.4.6 Number of Electrons
9.5 Radius of an Atom
9.5.1 Atomic Radius
215.00 pm182.00 pm
112
265
9.5.3 Covalent Radius
195.00 pm203.00 pm
96
260
9.5.4 Van der Waals Radius
249.00 pm239.00 pm
139
348
9.6 Atomic Weight
87.62 amu140.91 amu
6.94
294
9.7 Atomic Volume
33.70 cm3/mol20.80 cm3/mol
1.39
71.07
9.8 Adjacent Atomic Numbers
9.8.1 Previous Element
9.8.2 Next Element
9.9 Valence Electron Potential
25.70 (-eV)42.64 (-eV)
8
392.42
9.10 Lattice Constant
608.49 pm367.25 pm
228.58
891.25
9.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
9.12 Lattice C/A Ratio
10 Mechanical
10.1 Density
10.1.1 Density At Room Temperature
2.64 g/cm36.77 g/cm3
0.534
40.7
10.1.4 Density When Liquid (at m.p.)
2.38 g/cm36.50 g/cm3
0.512
20
10.2 Tensile Strength
10.3 Viscosity
10.4 Vapor Pressure
10.4.1 Vapor Pressure at 1000 K
121.00 (Pa)0.00 (Pa)
2.47E-11
121
10.4.4 Vapor Pressure at 2000 K
NA13.20 (Pa)
2.62E-10
774
10.6 Elasticity properties
10.6.1 Shear Modulus
6.03 GPa14.80 GPa
1.3
222
10.6.2 Bulk Modulus
11.1.1 Young's Modulus
15.70 GPa37.30 GPa
1.7
528
11.5 Poisson Ratio
11.6 Other Mechanical Properties
12 Magnetic
12.1 Magnetic Characteristics
12.1.1 Specific Gravity
12.1.3 Magnetic Ordering
Paramagnetic
Paramagnetic
12.1.4 Permeability
12.1.6 Susceptibility
12.2 Electrical Properties
12.2.1 Electrical Property
12.2.2 Resistivity
132.00 nΩ·m0.70 nΩ·m
0.18
961
12.3.2 Electrical Conductivity
0.08 106/cm Ω0.01 106/cm Ω
0.00666
0.63
12.3.4 Electron Affinity
5.03 kJ/mol50.00 kJ/mol
0
222.8
13 Thermal
13.1 Specific Heat
0.30 J/(kg K)0.19 J/(kg K)
0.11
3.6
13.2 Molar Heat Capacity
26.40 J/mol·K27.20 J/mol·K
16.443
62.7
13.4 Thermal Conductivity
35.40 W/m·K12.50 W/m·K
6.3
429
13.7 Critical Temperature
13.9 Thermal Expansion
22.50 µm/(m·K)6.70 µm/(m·K)
4.5
97
13.12 Enthalpy
13.12.1 Enthalpy of Vaporization
150.00 kJ/mol296.80 kJ/mol
7.32
799.1
14.1.2 Enthalpy of Fusion
9.16 kJ/mol6.89 kJ/mol
2.1
35.23
14.1.4 Enthalpy of Atomization
163.20 kJ/mol368.00 kJ/mol
61.5
837
14.3 Standard Molar Entropy
55.00 J/mol.K73.20 J/mol.K
9.5
198.1