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Strontium Properties
Strontium


Physical
0
Melting Point
769.00 °C 57
Boiling Point
1,384.00 °C 61
Hardness
0
Mohs Hardness
1.50 18
Brinell Hardness
Not Available 0
Vickers Hardness
Not Available 0
Optical Properties
0
Refractive Index
Not Available 0
Reflectivity
Not Available 0
Speed of Sound
Not Available 0
Allotropes
No 0
α Allotropes
Not Available 0
β Allotropes
Not Available 0
γ Allotropes
Not Available 0
Chemical
0
Chemical Formula
Sr 0
Isotopes
0
Known Isotopes
27 12
Electronegativity
0
Pauling Electronegativity
0.95 47
Sanderson Electronegativity
0.72 27
Allred Rochow Electronegativity
0.99 37
Mulliken-Jaffe Electronegativity
1.00 18
Allen Electronegativity
0.96 40
Electropositivity
0
Pauling Electropositivity
3.05 7
Ionization Energies
0
1st Energy Level
549.50 kJ/mol 70
2nd Energy Level
1,064.20 kJ/mol 77
3rd Energy Level
4,138.00 kJ/mol 10
Electrochemical Equivalent
1.64 g/amp-hr 45
Electron Work Function
2.59 eV 42
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility 0
Mechanical
0
Density
0
Density At Room Temperature
2.64 g/cm3 75
Density When Liquid (at m.p.)
2.38 g/cm3 52
Vapor Pressure
0
Vapor Pressure at 1000 K
121.00 (Pa) 1
Vapor Pressure at 2000 K
Not Available 0
Tensile Strength
Not Available 0
Viscosity
Not Available 0
Elasticity properties
0
Shear Modulus
6.03 GPa 46
Bulk Modulus
Not Available 0
Young's Modulus
15.70 GPa 49
Poisson Ratio
0.28 17
Other Mechanical Properties
NA 0
Periodic Table
0
Symbol
Sr 0
Group Number
2 16
Period Number
5 3
Block
s block 0
Element Family
Alkaline Earth 0
Atomic
0
Atomic Number
38 74
Atomic Weight
87.62 amu 68
Atomic Volume
33.70 cm3/mol 6
Electron Configuration
[Kr] 5s2 0
Valence Electron Potential
25.70 (-eV) 56
Atom
0
Number of Protons
38 73
Number of Neutrons
50 55
Number of Electrons
38 73
Crystal Structure
Face Centered Cubic (FCC) 0
Crystal Lattice
FCC-Crystal-Structure-of-Strontium.jpg#100 0
Radius of an Atom
0
Atomic Radius
215.00 pm 5
Covalent Radius
195.00 pm 15
Van der Waals Radius
249.00 pm 7
Lattice Constant
608.49 pm 6
Lattice Angles
π/2, π/2, π/2 0
Lattice C/A Ratio
Not Available 0
Adjacent Atomic Numbers
0
Next Element
59 0
Previous Element
45 0
Magnetic
0
Electrical Properties
0
Resistivity
132.00 nΩ·m 24
Electrical Conductivity
0.08 106/cm Ω 26
Electron Affinity
5.03 kJ/mol 38
Electrical Property
NA 0
Magnetic Characteristics
0
Specific Gravity
2.64 63
Magnetic Ordering
Paramagnetic 0
Permeability
Not Available 0
Susceptibility
Not Available 0
Thermal
0
Specific Heat
0.30 J/(kg K) 18
Thermal Conductivity
35.40 W/m·K 37
Critical Temperature
Not Available 0
Molar Heat Capacity
26.40 J/mol·K 28
Thermal Expansion
22.50 µm/(m·K) 18
Standard Molar Entropy
55.00 J/mol.K 26
Enthalpy
0
Enthalpy of Vaporization
150.00 kJ/mol 47
Enthalpy of Fusion
9.16 kJ/mol 38
Enthalpy of Atomization
163.20 kJ/mol 50
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