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
74402467440600
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.
- Holmium metal is very soft and malleable.
- Holmium metal is well known for its corrosion resistivity.
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
Marc Delafontaine
2.3.2 Discovery
2.4 Abundance
2.4.1 Abundance In Universe
4 * 10-6 %5 * 10-8 %
5E-09
0.11
2.4.2 Abundance In Sun
~0.000005 %~-9999 %
1E-08
0.1
2.4.3 Abundance In Meteorites
2.4.4 Abundance In Earth's Crust
1.2.1 Abundance In Oceans
1.2.2 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.
- Holmium metal has an ability to absorb neutrons, so this metal is used in nuclear reactors to keep the chain reactions of elements under control.
-
Alloys of Holmium are used to produce Magnet.
2.1.1 Industrial Uses
Ammunition Industry, Chemical Industry
NA
2.1.2 Medical Uses
2.1.3 Other Uses
Alloys
Alloys, Nuclear Research
2.2 Biological Properties
2.2.1 Toxicity
2.2.2 Present in Human Body
2.2.3 In Blood
0.03 Blood/mg dm-3NA
0
1970
2.3.1 In Bone
3 Physical
3.1 Melting Point
769.00 °C1,461.00 °C
27
3410
3.5 Boiling Point
1,384.00 °C2,600.00 °C
147
5660
3.6 Appearance
3.6.1 Physical State
3.6.2 Color
Silvery White
Silvery White
3.7.1 Luster
3.8 Hardness
3.8.1 Mohs Hardness
3.9.1 Brinell Hardness
3.9.2 Vickers Hardness
4.5 Speed of Sound
4.6 Optical Properties
4.6.1 Refractive Index
4.6.3 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
6.3 Electronegativity
6.3.1 Pauling Electronegativity
7.1.1 Sanderson Electronegativity
7.4.2 Allred Rochow Electronegativity
7.4.4 Mulliken-Jaffe Electronegativity
7.5.1 Allen Electronegativity
7.8 Electropositivity
7.8.2 Pauling Electropositivity
8.4 Ionization Energies
8.4.1 1st Energy Level
549.50 kJ/mol581.00 kJ/mol
375.7
26130
8.4.3 2nd Energy Level
1,064.20 kJ/mol1,140.00 kJ/mol
710.2162
28750
8.4.5 3rd Energy Level
4,138.00 kJ/mol2,204.00 kJ/mol
1600
34230
8.4.8 4th Energy Level
5,500.00 kJ/mol4,100.00 kJ/mol
2780
37066
8.5.2 5th Energy Level
6,910.00 kJ/molNA
4305.2
97510
8.6.3 6th Energy Level
8,760.00 kJ/molNA
5715.8
105800
8.6.5 7th Energy level
10,230.00 kJ/molNA
7226.8
114300
8.6.8 8th Energy Level
11,800.00 kJ/molNA
8857.4
125300
8.6.10 9th Energy Level
15,600.00 kJ/molNA
14110
134700
8.6.12 10th Energy Level
17,100.00 kJ/molNA
17100
144300
8.6.15 11th Energy Level
31,270.00 kJ/molNA
19900
169988
8.6.18 12th Energy Level
8.6.19 13th Energy Level
8.6.21 14th Energy Level
8.6.23 15th Energy Level
8.6.25 16th Energy Level
8.6.26 17th Energy Level
8.6.28 18th Energy Level
8.6.30 19th Energy Level
8.6.32 20th Energy Level
8.6.33 21st Energy Level
8.6.35 22nd Energy Level
8.6.37 23rd Energy Level
8.6.38 24th Energy Level
8.6.40 25th Energy Level
8.6.42 26th Energy Level
8.6.43 27th Energy Level
8.6.45 28th Energy Level
8.6.47 29th Energy Level
8.6.49 30th Energy Level
8.7 Electrochemical Equivalent
1.64 g/amp-hr2.02 g/amp-hr
0.16812
8.3209
8.8 Electron Work Function
8.9 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Anti Corrosion, Ionization, Radioactive Isotopes, Solubility
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
9.4.3 Number of Neutrons
9.5.1 Number of Electrons
10.2 Radius of an Atom
10.2.1 Atomic Radius
215.00 pm176.00 pm
112
265
10.5.2 Covalent Radius
195.00 pm192.00 pm
96
260
10.5.3 Van der Waals Radius
249.00 pm216.00 pm
139
348
10.6 Atomic Weight
87.62 amu164.93 amu
6.94
294
10.7 Atomic Volume
33.70 cm3/mol18.70 cm3/mol
1.39
71.07
10.9 Adjacent Atomic Numbers
10.9.1 Previous Element
10.9.2 Next Element
10.10 Valence Electron Potential
25.70 (-eV)47.90 (-eV)
8
392.42
10.11 Lattice Constant
608.49 pm357.73 pm
228.58
891.25
10.12 Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
10.13 Lattice C/A Ratio
11 Mechanical
11.1 Density
11.1.1 Density At Room Temperature
2.64 g/cm38.79 g/cm3
0.534
40.7
11.2.1 Density When Liquid (at m.p.)
2.38 g/cm38.34 g/cm3
0.512
20
11.3 Tensile Strength
11.6 Viscosity
11.7 Vapor Pressure
11.7.1 Vapor Pressure at 1000 K
121.00 (Pa)0.00 (Pa)
2.47E-11
121
11.8.1 Vapor Pressure at 2000 K
11.11 Elasticity properties
11.11.1 Shear Modulus
6.03 GPa26.30 GPa
1.3
222
12.1.2 Bulk Modulus
12.1.4 Young's Modulus
15.70 GPa64.80 GPa
1.7
528
12.3 Poisson Ratio
12.5 Other Mechanical Properties
NA
Ductile, Malleable, Sectile
13 Magnetic
13.1 Magnetic Characteristics
13.1.1 Specific Gravity
13.2.2 Magnetic Ordering
Paramagnetic
Paramagnetic
13.2.3 Permeability
13.2.5 Susceptibility
1.4 Electrical Properties
1.4.1 Electrical Property
1.4.2 Resistivity
132.00 nΩ·m814.00 nΩ·m
0.18
961
1.5.2 Electrical Conductivity
0.08 106/cm Ω0.01 106/cm Ω
0.00666
0.63
1.8.1 Electron Affinity
5.03 kJ/mol50.00 kJ/mol
0
222.8
2 Thermal
2.1 Specific Heat
0.30 J/(kg K)0.16 J/(kg K)
0.11
3.6
4.2 Molar Heat Capacity
26.40 J/mol·K27.15 J/mol·K
16.443
62.7
4.3 Thermal Conductivity
35.40 W/m·K16.20 W/m·K
6.3
429
4.4 Critical Temperature
4.6 Thermal Expansion
22.50 µm/(m·K)11.20 µm/(m·K)
4.5
97
4.7 Enthalpy
4.7.1 Enthalpy of Vaporization
150.00 kJ/mol241.00 kJ/mol
7.32
799.1
4.7.3 Enthalpy of Fusion
9.16 kJ/mol11.76 kJ/mol
2.1
35.23
5.2.6 Enthalpy of Atomization
163.20 kJ/mol301.00 kJ/mol
61.5
837
7.2 Standard Molar Entropy
55.00 J/mol.K75.30 J/mol.K
9.5
198.1