Cobalt

Gadolinium

Cobalt vs Gadolinium

Cobalt

Gadolinium

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1 Periodic Table

1.1 Symbol

1.2 Group Number

0 17

1.3 Period Number

2 7

1.4 Block

d block

f block

1.5 Element Family

Transition Metal

Lanthanide

1.6 CAS Number

74404847440542

7429905 54386242

1.7 Space Group Name

P63/mmc

1.8 Space Group Number

194.00194.00

11 229

2 Facts

2.1 Interesting Facts

The main source of Cobalt is as a by-product of copper and nickel metal mining.
Cobalt metal can be obtained from other elements like Oxygen, Sulfur and Arsenic.

It s also used in electroplating process as it exhibits anti cession properties.

Gadolinium is not found free in nature, hence it is not a native metal.
Gadolinium metal found in minerals like Monazite and Bastnaesite.

2.2 Sources

Found in Compounds, Mining, Ores of Minerals

Found in Minerals, Mining

2.3 History

2.3.1 Who Discovered

Georg Brandt

Jean Charles Galissard de Marignac

2.3.2 Discovery

In 1732

In 1880

2.4 Abundance

2.4.1 Abundance In Universe

3 * 10^-4 %2 * 10^-7 %

5E-09 0.11

2.5.1 Abundance In Sun

~0.0004 %~0.0000002 %

1E-08 0.1

2.5.2 Abundance In Meteorites

0.06 %0.00 %

1.7E-07 22

2.6.1 Abundance In Earth's Crust

0.00 %0.00 %

9.9E-12 8.1

3.1.1 Abundance In Oceans

0.00 %0.00 %

2E-23 1.1

3.3.1 Abundance In Humans

0.00 %NA

1E-13 1.4

4 Uses

4.1 Uses & Benefits

Its alloys with aluminum and nickel are used to make powerful magnets.
Few other alloys exhibit high-temperature strength and hence they are used in Turbines of Jet and Gas engine.

Its alloys are also used in making Magnets, electronic components and Data storage devices.
Compound of Gadolinium metal are used in magnetic resonance imaging (MRI).

4.1.1 Industrial Uses

Chemical Industry, Electrical Industry, Electronic Industry

Aerospace Industry, Electrical Industry, Electronic Industry

4.1.2 Medical Uses

Pharmaceutical Industry

4.1.3 Other Uses

Alloys

4.2 Biological Properties

4.2.1 Toxicity

Toxic

Non Toxic

4.2.2 Present in Human Body

✔ ✘

4.2.3 In Blood

0.04 Blood/mg dm-3NA

0 1970

4.2.5 In Bone

0.04 p.p.m.NA

0 170000

5 Physical

5.1 Melting Point

1,495.00 °C1,311.00 °C

27 3410

5.2 Boiling Point

2,870.00 °C3,233.00 °C

147 5660

5.4 Appearance

5.4.1 Physical State

Solid

5.4.2 Color

Gray

Silvery White

5.4.3 Luster

Metallic

5.5 Hardness

5.5.1 Mohs Hardness

5.00NA

0.2 8.5

5.5.4 Brinell Hardness

470.00 MPaNA

0.14 3490

5.7.1 Vickers Hardness

1,043.00 MPa510.00 MPa

121 3430

5.10 Speed of Sound

4,720.00 m/s2,680.00 m/s

818 16200

5.14 Optical Properties

5.14.1 Refractive Index

NANA

1.000933 1.7229

6.1.2 Reflectivity

67.00 %NA

58 97

6.2 Allotropes

✔ ✘

6.2.1 α Allotropes

α-Cobalt

Not Available

6.2.2 β Allotropes

β-Cobalt

Not Available

6.2.3 γ Allotropes

Not Available

7 Chemical

7.1 Chemical Formula

7.2 Isotopes

7.2.1 Known Isotopes

2626

0 38

7.5 Electronegativity

7.5.1 Pauling Electronegativity

1.881.20

0.7 2.54

7.6.3 Sanderson Electronegativity

2.56NA

0.22 2.56

7.7.2 Allred Rochow Electronegativity

1.701.11

0.86 1.82

7.7.4 Mulliken-Jaffe Electronegativity

NANA

0.62 2.48

7.8.1 Allen Electronegativity

1.84NA

0.659 2.7

8.2 Electropositivity

8.2.1 Pauling Electropositivity

2.122.80

1.46 3.3

8.3 Ionization Energies

8.3.1 1st Energy Level

760.40 kJ/mol593.40 kJ/mol

375.7 26130

8.4.3 2nd Energy Level

1,648.00 kJ/mol1,170.00 kJ/mol

710.2162 28750

8.4.5 3rd Energy Level

3,232.00 kJ/mol1,990.00 kJ/mol

1600 34230

9.1.1 4th Energy Level

4,950.00 kJ/mol4,250.00 kJ/mol

2780 37066

9.2.1 5th Energy Level

7,670.00 kJ/molNA

4305.2 97510

9.3.1 6th Energy Level

9,840.00 kJ/molNA

5715.8 105800

9.4.1 7th Energy level

12,440.00 kJ/molNA

7226.8 114300

9.6.2 8th Energy Level

15,230.00 kJ/molNA

8857.4 125300

9.6.4 9th Energy Level

17,959.00 kJ/molNA

14110 134700

9.6.6 10th Energy Level

26,570.00 kJ/molNA

17100 144300

9.7.1 11th Energy Level

29,400.00 kJ/molNA

19900 169988

9.7.2 12th Energy Level

32,400.00 kJ/molNA

22219 189368

9.7.3 13th Energy Level

36,600.00 kJ/molNA

26930 76015

9.7.4 14th Energy Level

39,700.00 kJ/molNA

29196 86450

9.7.5 15th Energy Level

42,800.00 kJ/molNA

41987 97510

9.7.6 16th Energy Level

49,396.00 kJ/molNA

47206 109480

9.7.7 17th Energy Level

52,737.00 kJ/molNA

52737 122200

9.7.8 18th Energy Level

134,810.00 kJ/molNA

58570 134810

9.7.9 19th Energy Level

145,170.00 kJ/molNA

64702 148700

9.7.10 20th Energy Level

154,700.00 kJ/molNA

80400 171200

9.7.11 21st Energy Level

167,400.00 kJ/molNA

87000 179100

9.7.12 22nd Energy Level

178,100.00 kJ/molNA

93400 184900

9.7.13 23rd Energy Level

189,300.00 kJ/molNA

98420 198800

9.7.14 24th Energy Level

NANA

104400 195200

9.7.15 25th Energy Level

NANA

121900 121900

9.7.16 26th Energy Level

NANA

127700 127700

9.7.17 27th Energy Level

NANA

133800 133800

9.7.18 28th Energy Level

NANA

139800 139800

9.7.19 29th Energy Level

NANA

148100 148100

9.7.20 30th Energy Level

NANA

154500 154500

9.8 Electrochemical Equivalent

1.10 g/amp-hr1.96 g/amp-hr

0.16812 8.3209

9.9 Electron Work Function

5.00 eV3.10 eV

2.14 5.65

9.10 Other Chemical Properties

Chemical Stability, Ionization

Corrosion, Flammable, Ionization, Radioactive Isotopes

10 Atomic

10.1 Atomic Number

2264

3 117

10.2 Electron Configuration

[Ar] 3d² 4s²

[Xe] 4f⁷ 5d¹ 6s²

10.3 Crystal Structure

Hexagonal Close Packed (HCP)

10.3.1 Crystal Lattice

10.4 Atom

10.4.1 Number of Protons

2264

3 117

10.4.2 Number of Neutrons

2693

4 184

10.4.3 Number of Electrons

2264

3 117

10.5 Radius of an Atom

10.5.1 Atomic Radius

147.00 pm180.00 pm

112 265

10.5.2 Covalent Radius

160.00 pm196.00 pm

96 260

10.5.3 Van der Waals Radius

200.00 pm237.00 pm

139 348

10.6 Atomic Weight

47.87 amu47.87 amu

6.94 294

10.7 Atomic Volume

10.64 cm3/mol19.90 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

95.20 (-eV)46.10 (-eV)

8 392.42

10.10 Lattice Constant

295.08 pm363.60 pm

228.58 891.25

10.11 Lattice Angles

π/2, π/2, 2 π/3

10.12 Lattice C/A Ratio

NA1.59

1.567 1.886

11 Mechanical

11.1 Density

11.1.1 Density At Room Temperature

4.51 g/cm³7.90 g/cm³

0.534 40.7

11.1.2 Density When Liquid (at m.p.)

4.11 g/cm37.40 g/cm3

0.512 20

11.2 Tensile Strength

434.00 MPaNA

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

0.98 (Pa)7.39 (Pa)

2.62E-10 774

11.5 Elasticity properties

11.5.1 Shear Modulus

44.00 GPa21.80 GPa

1.3 222

11.5.2 Bulk Modulus

110.00 GPa37.90 GPa

1.6 462

11.5.3 Young's Modulus

116.00 GPa54.80 GPa

1.7 528

11.6 Poisson Ratio

0.320.26

0.032 0.47

11.7 Other Mechanical Properties

Ductile

Ductile, Malleable

12 Magnetic

12.1 Magnetic Characteristics

12.1.1 Specific Gravity

4,500.007.90

0.53 4500

12.1.2 Magnetic Ordering

Paramagnetic

Ferromagnetic

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

Poor Conductor

Conductor

12.2.2 Resistivity

420.00 nΩ·m1.31 nΩ·m

0.18 961

12.2.3 Electrical Conductivity

0.02 10⁶/cm Ω0.01 10⁶/cm Ω

0.00666 0.63

12.2.4 Electron Affinity

7.60 kJ/mol50.00 kJ/mol

0 222.8

13 Thermal

13.1 Specific Heat

0.52 J/(kg K)0.23 J/(kg K)

0.11 3.6

13.2 Molar Heat Capacity

25.06 J/mol·K37.03 J/mol·K

16.443 62.7

13.3 Thermal Conductivity

21.90 W/m·K10.60 W/m·K

6.3 429

13.4 Critical Temperature

NANA

26.3 3223

13.5 Thermal Expansion

8.60 µm/(m·K)9.40 µm/(m·K)

4.5 97

13.6 Enthalpy

13.6.1 Enthalpy of Vaporization

429.00 kJ/mol359.40 kJ/mol

7.32 799.1

13.6.2 Enthalpy of Fusion

15.48 kJ/mol10.05 kJ/mol

2.1 35.23

13.6.3 Enthalpy of Atomization

468.60 kJ/mol352.00 kJ/mol

61.5 837

13.7 Standard Molar Entropy

27.30 J/mol.K68.10 J/mol.K

9.5 198.1

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