Potassium

Manganese

Potassium vs Manganese

Potassium

Manganese

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1 Periodic Table

1.1 Symbol

1.2 Group Number

0 17

1.3 Period Number

2 7

2.2 Block

s block

d block

2.3 Element Family

Alkali

Transition Metal

2.4 CAS Number

74400977439965

7429905 54386242

2.6 Space Group Name

Im_ 3m

I_ 43m

2.7 Space Group Number

229.00217.00

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.

Manganese is an essential trace element in all forms of life.
Manganese metal oxidizes very easily, but it does not fuse that easily.

3.2 Sources

Found in Minerals, Mining

Found in Minerals, Mining, Ores of Minerals

3.3 History

3.3.1 Who Discovered

Humphry Davy

Johann Gottlieb Gahn

3.3.2 Discovery

In 1807

In 1774

3.4 Abundance

3.4.1 Abundance In Universe

3 * 10^-4 %8 * 10^-4 %

5E-09 0.11

3.4.2 Abundance In Sun

~0.0004 %~0.001 %

1E-08 0.1

3.6.1 Abundance In Meteorites

0.07 %0.27 %

1.7E-07 22

3.9.1 Abundance In Earth's Crust

1.50 %0.11 %

9.9E-12 8.1

3.10.1 Abundance In Oceans

0.04 %0.00 %

2E-23 1.1

3.13.1 Abundance In Humans

0.20 %0.00 %

1E-13 1.4

5 Uses

5.1 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.

This metal is very brittle hence it mostly not used as a pure metal, but its alloys are very useful
Its alloy Manganese steel is extremely strong and used in railway tracks, safes, prison bars and riffle barrels.

5.1.1 Industrial Uses

Ammunition Industry, Chemical Industry

Automobile Industry, Electrical Industry, Electronic Industry

5.1.2 Medical Uses

Pharmaceutical Industry

5.1.3 Other Uses

Alloys

5.2 Biological Properties

5.2.1 Toxicity

Toxic

5.2.2 Present in Human Body

✔ ✘

5.2.3 In Blood

1,620.00 Blood/mg dm-30.08 Blood/mg dm-3

0 1970

5.2.5 In Bone

2,100.00 p.p.m.100.00 p.p.m.

0 170000

6 Physical

6.1 Melting Point

63.65 °C1,245.00 °C

27 3410

6.4 Boiling Point

774.00 °C1,962.00 °C

147 5660

6.6 Appearance

6.6.1 Physical State

Solid

6.6.2 Color

Silvery Gray

Silver

6.6.3 Luster

Metallic

6.8 Hardness

6.8.1 Mohs Hardness

0.406.00

0.2 8.5

6.8.3 Brinell Hardness

0.36 MPa196.00 MPa

0.14 3490

6.9.2 Vickers Hardness

NANA

121 3430

6.10 Speed of Sound

2,000.00 m/s5,150.00 m/s

818 16200

6.11 Optical Properties

6.11.1 Refractive Index

NANA

1.000933 1.7229

6.11.3 Reflectivity

NANA

58 97

6.12 Allotropes

✔ ✘

6.12.1 α Allotropes

Not Available

6.12.2 β Allotropes

Not Available

6.12.3 γ Allotropes

Not Available

7 Chemical

7.1 Chemical Formula

7.2 Isotopes

7.2.1 Known Isotopes

2021

0 38

7.4 Electronegativity

7.4.1 Pauling Electronegativity

0.821.55

0.7 2.54

8.1.2 Sanderson Electronegativity

0.452.20

0.22 2.56

8.1.6 Allred Rochow Electronegativity

0.911.60

0.86 1.82

8.1.7 Mulliken-Jaffe Electronegativity

0.73NA

0.62 2.48

8.2.3 Allen Electronegativity

0.731.75

0.659 2.7

8.3 Electropositivity

8.3.1 Pauling Electropositivity

3.182.45

1.46 3.3

8.4 Ionization Energies

8.4.1 1st Energy Level

418.80 kJ/mol717.30 kJ/mol

375.7 26130

8.4.3 2nd Energy Level

3,052.00 kJ/mol1,509.00 kJ/mol

710.2162 28750

9.1.1 3rd Energy Level

4,420.00 kJ/mol3,248.00 kJ/mol

1600 34230

9.1.2 4th Energy Level

5,877.00 kJ/mol4,940.00 kJ/mol

2780 37066

9.2.1 5th Energy Level

7,975.00 kJ/mol6,990.00 kJ/mol

4305.2 97510

9.3.1 6th Energy Level

9,590.00 kJ/mol9,220.00 kJ/mol

5715.8 105800

9.3.2 7th Energy level

11,343.00 kJ/mol11,500.00 kJ/mol

7226.8 114300

9.4.1 8th Energy Level

14,944.00 kJ/mol18,770.00 kJ/mol

8857.4 125300

9.5.1 9th Energy Level

16,963.70 kJ/mol21,400.00 kJ/mol

14110 134700

9.5.2 10th Energy Level

48,610.00 kJ/mol23,960.00 kJ/mol

17100 144300

9.6.2 11th Energy Level

54,490.00 kJ/mol27,590.00 kJ/mol

19900 169988

9.6.3 12th Energy Level

60,730.00 kJ/mol30,330.00 kJ/mol

22219 189368

9.6.5 13th Energy Level

68,950.00 kJ/mol33,150.00 kJ/mol

26930 76015

9.6.7 14th Energy Level

75,900.00 kJ/mol38,880.00 kJ/mol

29196 86450

9.6.8 15th Energy Level

83,080.00 kJ/mol41,987.00 kJ/mol

41987 97510

9.7.1 16th Energy Level

93,400.00 kJ/mol109,480.00 kJ/mol

47206 109480

9.7.2 17th Energy Level

99,710.00 kJ/mol118,100.00 kJ/mol

52737 122200

9.7.3 18th Energy Level

NA127,100.00 kJ/mol

58570 134810

9.7.4 19th Energy Level

NA138,600.00 kJ/mol

64702 148700

9.7.5 20th Energy Level

NA148,500.00 kJ/mol

80400 171200

9.7.6 21st Energy Level

NA158,600.00 kJ/mol

87000 179100

9.7.7 22nd Energy Level

NA172,500.00 kJ/mol

93400 184900

9.7.8 23rd Energy Level

NA181,380.00 kJ/mol

98420 198800

9.7.9 24th Energy Level

NANA

104400 195200

9.7.10 25th Energy Level

NANA

121900 121900

9.7.11 26th Energy Level

NANA

127700 127700

9.7.12 27th Energy Level

NANA

133800 133800

9.7.13 28th Energy Level

NANA

139800 139800

9.7.14 29th Energy Level

NANA

148100 148100

9.7.15 30th Energy Level

NANA

154500 154500

9.8 Electrochemical Equivalent

1.46 g/amp-hr0.29 g/amp-hr

0.16812 8.3209

9.9 Electron Work Function

2.30 eV4.10 eV

2.14 5.65

9.10 Other Chemical Properties

Chemical Stability, Flammability, Ionization, Solubility

Ionization, Radioactive Isotopes

10 Atomic

10.1 Atomic Number

1925

3 117

10.2 Electron Configuration

[Ar] 4s¹

[Ar] 3d⁵ 4s²

10.3 Crystal Structure

Body Centered Cubic (BCC)

10.3.1 Crystal Lattice

10.4 Atom

10.4.1 Number of Protons

1925

3 117

10.4.2 Number of Neutrons

2030

4 184

10.4.3 Number of Electrons

1925

3 117

10.5 Radius of an Atom

10.5.1 Atomic Radius

227.00 pm127.00 pm

112 265

10.5.2 Covalent Radius

203.00 pm139.00 pm

96 260

10.5.3 Van der Waals Radius

275.00 pm200.00 pm

139 348

10.6 Atomic Weight

39.10 amu54.94 amu

6.94 294

10.7 Atomic Volume

45.46 cm3/mol1.39 cm3/mol

1.39 71.07

10.8 Adjacent Atomic Numbers

10.8.1 Previous Element

10.8.2 Next Element

10.9 Valence Electron Potential

10.40 (-eV)220.00 (-eV)

8 392.42

10.10 Lattice Constant

532.80 pm891.25 pm

228.58 891.25

10.11 Lattice Angles

π/2, π/2, π/2

10.12 Lattice C/A Ratio

NANA

1.567 1.886

11 Mechanical

11.1 Density

11.1.1 Density At Room Temperature

0.86 g/cm³7.21 g/cm³

0.534 40.7

11.1.2 Density When Liquid (at m.p.)

0.83 g/cm35.95 g/cm3

0.512 20

11.2 Tensile Strength

NANA

2.5 11000

11.3 Viscosity

NANA

0.001526 0.001526

11.4 Vapor Pressure

11.4.1 Vapor Pressure at 1000 K

NA0.00 (Pa)

2.47E-11 121

11.4.2 Vapor Pressure at 2000 K

NANA

2.62E-10 774

11.5 Elasticity properties

11.5.1 Shear Modulus

1.30 GPaNA

1.3 222

11.5.2 Bulk Modulus

3.10 GPa120.00 GPa

1.6 462

11.5.3 Young's Modulus

3.53 GPa198.00 GPa

1.7 528

11.6 Poisson Ratio

NANA

0.032 0.47

11.7 Other Mechanical Properties

12 Magnetic

12.1 Magnetic Characteristics

12.1.1 Specific Gravity

0.867.21

0.53 4500

12.1.2 Magnetic Ordering

Paramagnetic

12.1.3 Permeability

NANA

1.25643E-06 0.0063

12.1.4 Susceptibility

NANA

-0.000166 200000

12.2 Electrical Properties

12.2.1 Electrical Property

Conductor

12.2.2 Resistivity

72.00 nΩ·m1.44 nΩ·m

0.18 961

12.2.3 Electrical Conductivity

0.14 10⁶/cm Ω0.01 10⁶/cm Ω

0.00666 0.63

12.2.4 Electron Affinity

48.40 kJ/mol0.00 kJ/mol

0 222.8

13 Thermal

13.1 Specific Heat

0.75 J/(kg K)0.48 J/(kg K)

0.11 3.6

13.2 Molar Heat Capacity

29.60 J/mol·K26.32 J/mol·K

16.443 62.7

13.3 Thermal Conductivity

102.50 W/m·K7.81 W/m·K

6.3 429

13.4 Critical Temperature

2,223.00 KNA

26.3 3223

13.5 Thermal Expansion

83.30 µm/(m·K)21.70 µm/(m·K)

4.5 97

13.6 Enthalpy

13.6.1 Enthalpy of Vaporization

77.50 kJ/mol219.70 kJ/mol

7.32 799.1

13.6.2 Enthalpy of Fusion

2.32 kJ/mol14.64 kJ/mol

2.1 35.23

13.6.3 Enthalpy of Atomization

89.50 kJ/mol280.30 kJ/mol

61.5 837

13.7 Standard Molar Entropy

64.70 J/mol.K32.00 J/mol.K

9.5 198.1

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