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Potassium
Potassium

Strontium
Strontium



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Potassium
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Strontium

Potassium vs Strontium

1 Periodic Table
1.1 Symbol
K
Sr
1.2 Group Number
12
Gadolinium
0 17
1.3 Period Number
45
Lithium
2 7
1.5 Block
s block
s block
1.6 Element Family
Alkali
Alkaline Earth
1.7 CAS Number
74400977440246
Aluminium
7429905 54386242
2.2 Space Group Name
Im_ 3m
Fm_ 3m
2.3 Space Group Number
229.00225.00
Plutonium
11 229
3 Facts
3.1 Interesting Facts
  • In the list of most abundant element Potassium is ranked 7th.
  • Potassium can easily be sliced (chopped) down using knife.
  • Strontium element is softer than Calcium.
  • Silvery Strontium turns yellow, if exposed to air.
3.2 Sources
Found in Minerals, Mining
Found in Minerals, Mining, Ores of Minerals
3.3 History
3.3.1 Who Discovered
Humphry Davy
William Cruickshank
3.3.2 Discovery
In 1807
In 1787
3.4 Abundance
3.4.1 Abundance In Universe
3 * 10-4 %4 * 10-6 %
Thallium
5E-09 0.11
3.5.2 Abundance In Sun
~0.0004 %~0.000005 %
Beryllium
1E-08 0.1
3.6.2 Abundance In Meteorites
0.07 %0.00 %
Gold
1.7E-07 22
3.7.2 Abundance In Earth's Crust
1.50 %0.04 %
Radium
9.9E-12 8.1
3.8.2 Abundance In Oceans
0.04 %0.00 %
Protactinium
2E-23 1.1
3.8.5 Abundance In Humans
0.20 %0.00 %
Radium
1E-13 1.4
4 Uses
4.1 Uses & Benefits
  • Potassium’s compounds are in high demand for their application in Fertilizer manufacturing.
  • Potassium carbonate is used in glass manufacturing and Potassium carbonate in manufacturing detergent and body wash.
  • 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.
4.1.1 Industrial Uses
Ammunition Industry, Chemical Industry
Ammunition Industry, Chemical Industry
4.1.2 Medical Uses
Pharmaceutical Industry
NA
4.1.3 Other Uses
NA
Alloys
4.2 Biological Properties
4.2.1 Toxicity
Toxic
Non Toxic
4.2.2 Present in Human Body
4.2.3 In Blood
1,620.00 Blood/mg dm-30.03 Blood/mg dm-3
Plutonium
0 1970
4.2.6 In Bone
2,100.00 p.p.m.140.00 p.p.m.
Plutonium
0 170000
5 Physical
5.1 Melting Point
63.65 °C769.00 °C
Francium
27 3410
5.3 Boiling Point
774.00 °C1,384.00 °C
Flerovium
147 5660
5.4 Appearance
5.4.1 Physical State
Solid
Solid
5.4.2 Color
Silvery Gray
Silvery White
5.4.3 Luster
NA
Metallic
5.5 Hardness
5.5.1 Mohs Hardness
0.401.50
Cesium
0.2 8.5
5.5.6 Brinell Hardness
0.36 MPaNA
Cesium
0.14 3490
5.5.9 Vickers Hardness
NANA
Palladium
121 3430
5.6 Speed of Sound
2,000.00 m/sNA
Thallium
818 16200
5.7 Optical Properties
5.7.1 Refractive Index
NANA
Mercury
1.000933 1.7229
5.7.4 Reflectivity
NANA
Molybdenum
58 97
5.8 Allotropes
5.8.2 α Allotropes
Not Available
Not Available
5.8.3 β Allotropes
Not Available
Not Available
5.8.4 γ Allotropes
Not Available
Not Available
6 Chemical
6.1 Chemical Formula
K
Sr
6.2 Isotopes
6.2.1 Known Isotopes
2027
Tennessine
0 38
6.3 Electronegativity
6.3.1 Pauling Electronegativity
0.820.95
Francium
0.7 2.54
6.4.1 Sanderson Electronegativity
0.450.72
Cesium
0.22 2.56
6.5.2 Allred Rochow Electronegativity
0.910.99
Cesium
0.86 1.82
6.6.1 Mulliken-Jaffe Electronegativity
0.731.00
Cesium
0.62 2.48
7.1.2 Allen Electronegativity
0.730.96
Cesium
0.659 2.7
7.5 Electropositivity
7.5.1 Pauling Electropositivity
3.183.05
Gold
1.46 3.3
7.6 Ionization Energies
7.6.1 1st Energy Level
418.80 kJ/mol549.50 kJ/mol
Cesium
375.7 26130
7.6.4 2nd Energy Level
3,052.00 kJ/mol1,064.20 kJ/mol
Ruthenium
710.2162 28750
7.7.1 3rd Energy Level
4,420.00 kJ/mol4,138.00 kJ/mol
Osmium
1600 34230
7.8.2 4th Energy Level
5,877.00 kJ/mol5,500.00 kJ/mol
Thorium
2780 37066
7.9.1 5th Energy Level
7,975.00 kJ/mol6,910.00 kJ/mol
Dubnium
4305.2 97510
8.1.1 6th Energy Level
9,590.00 kJ/mol8,760.00 kJ/mol
Seaborgium
5715.8 105800
8.2.1 7th Energy level
11,343.00 kJ/mol10,230.00 kJ/mol
Bohrium
7226.8 114300
8.7.1 8th Energy Level
14,944.00 kJ/mol11,800.00 kJ/mol
Hassium
8857.4 125300
8.8.1 9th Energy Level
16,963.70 kJ/mol15,600.00 kJ/mol
Yttrium
14110 134700
8.10.1 10th Energy Level
48,610.00 kJ/mol17,100.00 kJ/mol
Copper
17100 144300
9.1.2 11th Energy Level
54,490.00 kJ/mol31,270.00 kJ/mol
Yttrium
19900 169988
9.1.4 12th Energy Level
60,730.00 kJ/molNA
Molybdenum
22219 189368
9.2.2 13th Energy Level
68,950.00 kJ/molNA
Molybdenum
26930 76015
9.3.2 14th Energy Level
75,900.00 kJ/molNA
Molybdenum
29196 86450
9.4.1 15th Energy Level
83,080.00 kJ/molNA
Manganese
41987 97510
9.6.1 16th Energy Level
93,400.00 kJ/molNA
Iron
47206 109480
9.6.3 17th Energy Level
99,710.00 kJ/molNA
Cobalt
52737 122200
9.8.2 18th Energy Level
NANA
Nickel
58570 134810
9.8.3 19th Energy Level
NANA
Copper
64702 148700
9.10.2 20th Energy Level
NANA
Molybdenum
80400 171200
9.11.2 21st Energy Level
NANA
Molybdenum
87000 179100
9.11.3 22nd Energy Level
NANA
Molybdenum
93400 184900
9.14.1 23rd Energy Level
NANA
Molybdenum
98420 198800
10.1.2 24th Energy Level
NANA
Molybdenum
104400 195200
11.1.2 25th Energy Level
NANA
Molybdenum
121900 121900
11.1.5 26th Energy Level
NANA
Molybdenum
127700 127700
11.1.7 27th Energy Level
NANA
Molybdenum
133800 133800
11.1.9 28th Energy Level
NANA
Molybdenum
139800 139800
11.3.3 29th Energy Level
NANA
Molybdenum
148100 148100
11.4.1 30th Energy Level
NANA
Molybdenum
154500 154500
11.5 Electrochemical Equivalent
1.46 g/amp-hr1.64 g/amp-hr
Beryllium
0.16812 8.3209
11.7 Electron Work Function
2.30 eV2.59 eV
Cesium
2.14 5.65
11.8 Other Chemical Properties
Chemical Stability, Flammability, Ionization, Solubility
Ionization, Radioactive Isotopes, Radioactivity, Solubility
12 Atomic
12.1 Atomic Number
1938
Lithium
3 117
12.2 Electron Configuration
[Ar] 4s1
[Kr] 5s2
12.3 Crystal Structure
Body Centered Cubic (BCC)
Face Centered Cubic (FCC)
12.3.1 Crystal Lattice
12.4 Atom
12.4.1 Number of Protons
1938
Lithium
3 117
13.1.2 Number of Neutrons
2050
Lithium
4 184
13.2.1 Number of Electrons
1938
Lithium
3 117
13.5 Radius of an Atom
13.5.1 Atomic Radius
227.00 pm215.00 pm
Beryllium
112 265
13.6.1 Covalent Radius
203.00 pm195.00 pm
Beryllium
96 260
14.1.2 Van der Waals Radius
275.00 pm249.00 pm
Zinc
139 348
14.3 Atomic Weight
39.10 amu87.62 amu
Lithium
6.94 294
14.5 Atomic Volume
45.46 cm3/mol33.70 cm3/mol
Manganese
1.39 71.07
14.7 Adjacent Atomic Numbers
14.7.1 Previous Element
14.7.2 Next Element
14.8 Valence Electron Potential
10.40 (-eV)25.70 (-eV)
Francium
8 392.42
14.9 Lattice Constant
532.80 pm608.49 pm
Beryllium
228.58 891.25
14.11 Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
14.12 Lattice C/A Ratio
NANA
Beryllium
1.567 1.886
15 Mechanical
15.1 Density
15.1.1 Density At Room Temperature
0.86 g/cm32.64 g/cm3
Lithium
0.534 40.7
16.1.1 Density When Liquid (at m.p.)
0.83 g/cm32.38 g/cm3
Lithium
0.512 20
16.3 Tensile Strength
NANA
Indium
2.5 11000
16.5 Viscosity
NANA
Mercury
0.001526 0.001526
16.6 Vapor Pressure
16.6.1 Vapor Pressure at 1000 K
NA121.00 (Pa)
Cerium
2.47E-11 121
16.7.1 Vapor Pressure at 2000 K
NANA
Tungsten
2.62E-10 774
16.9 Elasticity properties
16.9.1 Shear Modulus
1.30 GPa6.03 GPa
Palladium
1.3 222
16.10.2 Bulk Modulus
3.10 GPaNA
Cesium
1.6 462
16.10.4 Young's Modulus
3.53 GPa15.70 GPa
Cesium
1.7 528
16.11 Poisson Ratio
NA0.28
Beryllium
0.032 0.47
16.13 Other Mechanical Properties
NA
NA
17 Magnetic
17.1 Magnetic Characteristics
17.1.1 Specific Gravity
0.862.64
Lithium
0.53 4500
17.1.2 Magnetic Ordering
Paramagnetic
Paramagnetic
17.1.3 Permeability
NANA
Bismuth
1.25643E-06 0.0063
17.1.4 Susceptibility
NANA
Bismuth
-0.000166 200000
17.2 Electrical Properties
17.2.1 Electrical Property
Conductor
NA
17.2.2 Resistivity
72.00 nΩ·m132.00 nΩ·m
Thallium
0.18 961
17.2.3 Electrical Conductivity
0.14 106/cm Ω0.08 106/cm Ω
Plutonium
0.00666 0.63
17.2.4 Electron Affinity
48.40 kJ/mol5.03 kJ/mol
Mercury
0 222.8
18 Thermal
18.1 Specific Heat
0.75 J/(kg K)0.30 J/(kg K)
Americium
0.11 3.6
18.2 Molar Heat Capacity
29.60 J/mol·K26.40 J/mol·K
Beryllium
16.443 62.7
18.3 Thermal Conductivity
102.50 W/m·K35.40 W/m·K
Neptunium
6.3 429
18.4 Critical Temperature
2,223.00 KNA
Ytterbium
26.3 3223
18.5 Thermal Expansion
83.30 µm/(m·K)22.50 µm/(m·K)
Tungsten
4.5 97
18.6 Enthalpy
18.6.1 Enthalpy of Vaporization
77.50 kJ/mol150.00 kJ/mol
Zinc
7.32 799.1
18.6.2 Enthalpy of Fusion
2.32 kJ/mol9.16 kJ/mol
Cesium
2.1 35.23
18.6.3 Enthalpy of Atomization
89.50 kJ/mol163.20 kJ/mol
Mercury
61.5 837
18.7 Standard Molar Entropy
64.70 J/mol.K55.00 J/mol.K
Beryllium
9.5 198.1