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Strontium
Strontium

Lawrencium
Lawrencium



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Strontium
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Strontium vs Lawrencium

1 Periodic Table
1.1 Symbol
Sr
Lr
1.2 Group Number
2NA
Gadolinium
0 17
1.3 Period Number
57
Lithium
2 7
1.4 Block
s block
d block
1.5 Element Family
Alkaline Earth
Actinide
1.6 CAS Number
744024622537195
Aluminium
7429905 54386242
1.7 Space Group Name
Fm_ 3m
Not Available
1.8 Space Group Number
225.00NA
Plutonium
11 229
2 Facts
2.1 Interesting Facts
  • Strontium element is softer than Calcium.
  • Silvery Strontium turns yellow, if exposed to air.
  • It is synthetically produced metal.
  • Radiation hazard can be produce by it.
2.2 Sources
Found in Minerals, Mining, Ores of Minerals
Bombarding Californium-252 with Boron Nuclei, Found in Minerals, Mining
2.3 History
2.3.1 Who Discovered
William Cruickshank
Lawrence Berkeley National Laboratory and Joint Institute for Nuclear Research
2.3.2 Discovery
In 1787
In 1961–1971
2.4 Abundance
2.4.1 Abundance In Universe
4 * 10-6 %NA
Thallium
5E-09 0.11
2.4.2 Abundance In Sun
~0.000005 %~-9999 %
Beryllium
1E-08 0.1
2.4.3 Abundance In Meteorites
0.00 %NA
Gold
1.7E-07 22
2.4.4 Abundance In Earth's Crust
0.04 %NA
Radium
9.9E-12 8.1
2.4.5 Abundance In Oceans
0.00 %NA
Protactinium
2E-23 1.1
2.4.6 Abundance In Humans
0.00 %NA
Radium
1E-13 1.4
3 Uses
3.1 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.
  • Currently known uses of Lawrencium metal are limited to research purpose only.
3.1.1 Industrial Uses
Ammunition Industry, Chemical Industry
NA
3.1.2 Medical Uses
NA
NA
3.1.3 Other Uses
Alloys
NA
3.2 Biological Properties
3.2.1 Toxicity
Non Toxic
Unknown
3.2.2 Present in Human Body
3.2.3 In Blood
0.03 Blood/mg dm-30.00 Blood/mg dm-3
Plutonium
0 1970
3.2.4 In Bone
140.00 p.p.m.0.00 p.p.m.
Plutonium
0 170000
4 Physical
4.1 Melting Point
769.00 °C1,627.00 °C
Francium
27 3410
4.2 Boiling Point
1,384.00 °CNA
Flerovium
147 5660
4.3 Appearance
4.3.1 Physical State
Solid
Solid
4.3.2 Color
Silvery White
Silver
4.3.3 Luster
Metallic
Unknown Luster
4.4 Hardness
4.4.1 Mohs Hardness
1.50NA
Cesium
0.2 8.5
4.4.2 Brinell Hardness
NANA
Cesium
0.14 3490
4.4.3 Vickers Hardness
NANA
Palladium
121 3430
4.5 Speed of Sound
NANA
Thallium
818 16200
4.6 Optical Properties
4.6.1 Refractive Index
NANA
Mercury
1.000933 1.7229
4.6.2 Reflectivity
NANA
Molybdenum
58 97
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
Sr
Lr
5.2 Isotopes
5.2.1 Known Isotopes
2710
Tennessine
0 38
5.3 Electronegativity
5.3.1 Pauling Electronegativity
0.95NA
Francium
0.7 2.54
5.3.2 Sanderson Electronegativity
0.72NA
Cesium
0.22 2.56
5.3.3 Allred Rochow Electronegativity
0.99NA
Cesium
0.86 1.82
5.3.4 Mulliken-Jaffe Electronegativity
1.00NA
Cesium
0.62 2.48
5.3.5 Allen Electronegativity
0.96NA
Cesium
0.659 2.7
5.4 Electropositivity
5.4.1 Pauling Electropositivity
3.05NA
Gold
1.46 3.3
5.5 Ionization Energies
5.5.1 1st Energy Level
549.50 kJ/mol470.00 kJ/mol
Cesium
375.7 26130
5.5.2 2nd Energy Level
1,064.20 kJ/mol1,428.00 kJ/mol
Ruthenium
710.2162 28750
5.5.3 3rd Energy Level
4,138.00 kJ/mol2,228.00 kJ/mol
Osmium
1600 34230
5.5.4 4th Energy Level
5,500.00 kJ/mol4,910.00 kJ/mol
Thorium
2780 37066
5.5.5 5th Energy Level
6,910.00 kJ/molNA
Dubnium
4305.2 97510
5.5.6 6th Energy Level
8,760.00 kJ/molNA
Seaborgium
5715.8 105800
5.5.7 7th Energy level
10,230.00 kJ/molNA
Bohrium
7226.8 114300
5.5.8 8th Energy Level
11,800.00 kJ/molNA
Hassium
8857.4 125300
5.5.9 9th Energy Level
15,600.00 kJ/molNA
Yttrium
14110 134700
5.5.10 10th Energy Level
17,100.00 kJ/molNA
Copper
17100 144300
5.5.11 11th Energy Level
31,270.00 kJ/molNA
Yttrium
19900 169988
5.5.12 12th Energy Level
NANA
Molybdenum
22219 189368
5.5.13 13th Energy Level
NANA
Molybdenum
26930 76015
5.5.14 14th Energy Level
NANA
Molybdenum
29196 86450
5.5.15 15th Energy Level
NANA
Manganese
41987 97510
5.5.16 16th Energy Level
NANA
Iron
47206 109480
5.5.17 17th Energy Level
NANA
Cobalt
52737 122200
5.5.18 18th Energy Level
NANA
Nickel
58570 134810
5.5.19 19th Energy Level
NANA
Copper
64702 148700
5.5.20 20th Energy Level
NANA
Molybdenum
80400 171200
5.5.21 21st Energy Level
NANA
Molybdenum
87000 179100
5.5.22 22nd Energy Level
NANA
Molybdenum
93400 184900
5.5.23 23rd Energy Level
NANA
Molybdenum
98420 198800
5.5.24 24th Energy Level
NANA
Molybdenum
104400 195200
5.5.25 25th Energy Level
NANA
Molybdenum
121900 121900
5.5.26 26th Energy Level
NANA
Molybdenum
127700 127700
5.5.27 27th Energy Level
NANA
Molybdenum
133800 133800
5.5.28 28th Energy Level
NANA
Molybdenum
139800 139800
5.5.29 29th Energy Level
NANA
Molybdenum
148100 148100
5.5.30 30th Energy Level
NANA
Molybdenum
154500 154500
5.6 Electrochemical Equivalent
1.64 g/amp-hr3.23 g/amp-hr
Beryllium
0.16812 8.3209
5.7 Electron Work Function
2.59 eVNA
Cesium
2.14 5.65
5.8 Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Ionization, Radioactive Isotopes
6 Atomic
6.1 Atomic Number
38103
Lithium
3 117
6.2 Electron Configuration
[Kr] 5s2
[Rn] 5f14 7s2 7p1
6.3 Crystal Structure
Face Centered Cubic (FCC)
Hexagonal Close Packed (HCP)
6.3.1 Crystal Lattice
6.4 Atom
6.4.1 Number of Protons
38103
Lithium
3 117
6.4.2 Number of Neutrons
50157
Lithium
4 184
6.4.3 Number of Electrons
38103
Lithium
3 117
6.5 Radius of an Atom
6.5.1 Atomic Radius
215.00 pmNA
Beryllium
112 265
6.5.2 Covalent Radius
195.00 pmNA
Beryllium
96 260
6.5.3 Van der Waals Radius
249.00 pm246.00 pm
Zinc
139 348
6.6 Atomic Weight
87.62 amu266.00 amu
Lithium
6.94 294
6.7 Atomic Volume
33.70 cm3/molNA
Manganese
1.39 71.07
6.8 Adjacent Atomic Numbers
6.8.1 Previous Element
6.8.2 Next Element
6.9 Valence Electron Potential
25.70 (-eV)NA
Francium
8 392.42
6.10 Lattice Constant
608.49 pmNA
Beryllium
228.58 891.25
6.11 Lattice Angles
π/2, π/2, π/2
NA
6.12 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
7 Mechanical
7.1 Density
7.1.1 Density At Room Temperature
2.64 g/cm3NA
Lithium
0.534 40.7
7.1.2 Density When Liquid (at m.p.)
2.38 g/cm3NA
Lithium
0.512 20
7.2 Tensile Strength
NANA
Indium
2.5 11000
7.3 Viscosity
NANA
Mercury
0.001526 0.001526
7.4 Vapor Pressure
7.4.1 Vapor Pressure at 1000 K
121.00 (Pa)NA
Cerium
2.47E-11 121
7.4.2 Vapor Pressure at 2000 K
NANA
Tungsten
2.62E-10 774
7.5 Elasticity properties
7.5.1 Shear Modulus
6.03 GPaNA
Potassium
1.3 222
7.5.2 Bulk Modulus
NANA
Cesium
1.6 462
7.5.3 Young's Modulus
15.70 GPaNA
Cesium
1.7 528
7.6 Poisson Ratio
0.280.32
Beryllium
0.032 0.47
7.7 Other Mechanical Properties
NA
Unknown
8 Magnetic
8.1 Magnetic Characteristics
8.1.1 Specific Gravity
2.64NA
Lithium
0.53 4500
8.1.2 Magnetic Ordering
Paramagnetic
Unknown
8.1.3 Permeability
NANA
Bismuth
1.25643E-06 0.0063
8.1.4 Susceptibility
NANA
Bismuth
-0.000166 200000
8.2 Electrical Properties
8.2.1 Electrical Property
NA
Unknown
8.2.2 Resistivity
132.00 nΩ·mNA
Thallium
0.18 961
8.2.3 Electrical Conductivity
0.08 106/cm ΩNA
Plutonium
0.00666 0.63
8.2.4 Electron Affinity
5.03 kJ/molNA
Mercury
0 222.8
9 Thermal
9.1 Specific Heat
0.30 J/(kg K)NA
Americium
0.11 3.6
9.2 Molar Heat Capacity
26.40 J/mol·KNA
Beryllium
16.443 62.7
9.3 Thermal Conductivity
35.40 W/m·KNA
Neptunium
6.3 429
9.4 Critical Temperature
NANA
Ytterbium
26.3 3223
9.5 Thermal Expansion
22.50 µm/(m·K)NA
Tungsten
4.5 97
9.6 Enthalpy
9.6.1 Enthalpy of Vaporization
150.00 kJ/molNA
Zinc
7.32 799.1
9.6.2 Enthalpy of Fusion
9.16 kJ/molNA
Cesium
2.1 35.23
9.6.3 Enthalpy of Atomization
163.20 kJ/molNA
Mercury
61.5 837
9.7 Standard Molar Entropy
55.00 J/mol.KNA
Beryllium
9.5 198.1