Osmium

Calcium

Osmium Calcium Comparison

Osmium

Calcium

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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

s block

1.2 Element Family

Transition Metal

Alkaline Earth

1.4 CAS Number

74400427440702

7429905 54386242

1.5 Space Group Name

P63/mmc

Fm_ 3m

1.6 Space Group Number

194.00225.00

11 229

2 Facts

2.1 Interesting Facts

Osmium metal does not oxidize in air unless it is heated.
But if it heated den it forms Osmium Tetroxide, which is highly toxic.

Calcium ranks 5th rank in the list of earth’s abundance Percentage.

It is found in the compound state.

Gypsum or calcium sulfate is used as plaster and plaster of paris.

2.2 Sources

Found As a By-product, Found in Minerals, Mining

Earth's crust, Found in Minerals, Mining, Ores of Minerals

2.3 History

2.3.1 Who Discovered

Smithson Tennant

Humphry Davy

2.3.2 Discovery

In 1803

In 1808

2.4 Abundance

2.4.1 Abundance In Universe

3 * 10^-7 %7 * 10^-3 %

5E-09 0.11

2.7.1 Abundance In Sun

~0.0000002 %~0.007 %

1E-08 0.1

2.9.1 Abundance In Meteorites

0.00 %1.10 %

1.7E-07 22

3.4.2 Abundance In Earth's Crust

0.00 %5.00 %

9.9E-12 8.1

3.4.4 Abundance In Oceans

NA0.00 %

2E-23 1.1

3.4.6 Abundance In Humans

NA1.40 %

1E-13 1.4

4 Uses

4.1 Uses & Benefits

Its has very limited uses and its alloys are very hard and are used in the manufacturing of pen tips, pivots, needles and electrical contacts.
It is also used as industrial catalyst to speed up the chemical reaction.

It is used as a reducing agent while preparing metals like thorium and uranium. It is also used as an alloying agent for metals such as aluminum, copper & lead.
Calcium carbonate or lime stone is used in cement.

4.1.1 Industrial Uses

Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry

Chemical Industry

4.1.2 Medical Uses

Dentistry, Pharmaceutical Industry

4.1.3 Other Uses

Alloys

4.2 Biological Properties

4.2.1 Toxicity

Highly Toxic

Non Toxic

4.2.2 Present in Human Body

✔ ✘

4.2.3 In Blood

NA60.50 Blood/mg dm-3

0 1970

4.2.5 In Bone

NA170,000.00 p.p.m.

0 170000

5 Physical

5.1 Melting Point

3,045.00 °C839.00 °C

27 3410

6.3 Boiling Point

5,027.00 °C1,484.00 °C

147 5660

6.4 Appearance

6.4.1 Physical State

Solid

6.4.2 Color

Silvery Bluish-Gray

Gray

6.4.3 Luster

Metallic

6.5 Hardness

6.5.1 Mohs Hardness

7.001.75

0.2 8.5

7.1.1 Brinell Hardness

3,490.00 MPa170.00 MPa

0.14 3490

7.2.1 Vickers Hardness

NANA

121 3430

7.5 Speed of Sound

4,940.00 m/s3,810.00 m/s

818 16200

7.6 Optical Properties

7.6.1 Refractive Index

NANA

1.000933 1.7229

7.6.2 Reflectivity

NANA

58 97

7.7 Allotropes

✔ ✘

7.7.1 α Allotropes

Not Available

7.7.2 β Allotropes

Not Available

7.7.3 γ Allotropes

Not Available

8 Chemical

8.1 Chemical Formula

8.2 Isotopes

8.2.1 Known Isotopes

3519

0 38

8.4 Electronegativity

8.4.1 Pauling Electronegativity

2.201.00

0.7 2.54

8.5.2 Sanderson Electronegativity

NA0.95

0.22 2.56

8.5.4 Allred Rochow Electronegativity

1.521.04

0.86 1.82

9.2.2 Mulliken-Jaffe Electronegativity

NA1.08

0.62 2.48

9.3.2 Allen Electronegativity

1.651.03

0.659 2.7

9.4 Electropositivity

9.4.1 Pauling Electropositivity

1.803.00

1.46 3.3

9.5 Ionization Energies

9.5.1 1st Energy Level

840.00 kJ/mol589.80 kJ/mol

375.7 26130

9.5.3 2nd Energy Level

1,309.80 kJ/mol1,145.40 kJ/mol

710.2162 28750

9.5.5 3rd Energy Level

1,600.00 kJ/mol4,912.40 kJ/mol

1600 34230

9.5.7 4th Energy Level

NA6,491.00 kJ/mol

2780 37066

9.6.2 5th Energy Level

NA8,153.00 kJ/mol

4305.2 97510

9.7.2 6th Energy Level

NA10,496.00 kJ/mol

5715.8 105800

9.7.4 7th Energy level

NA12,270.00 kJ/mol

7226.8 114300

9.7.6 8th Energy Level

NA14,206.00 kJ/mol

8857.4 125300

9.7.8 9th Energy Level

NA18,191.00 kJ/mol

14110 134700

9.7.10 10th Energy Level

NA20,385.00 kJ/mol

17100 144300

9.7.12 11th Energy Level

NA57,110.00 kJ/mol

19900 169988

9.7.14 12th Energy Level

NA63,410.00 kJ/mol

22219 189368

9.7.16 13th Energy Level

NA70,110.00 kJ/mol

26930 76015

9.7.19 14th Energy Level

NA78,890.00 kJ/mol

29196 86450

9.7.20 15th Energy Level

NA86,310.00 kJ/mol

41987 97510

9.7.22 16th Energy Level

NA94,000.00 kJ/mol

47206 109480

9.7.24 17th Energy Level

NA104,900.00 kJ/mol

52737 122200

9.7.26 18th Energy Level

NA111,711.00 kJ/mol

58570 134810

9.7.28 19th Energy Level

NANA

64702 148700

9.7.29 20th Energy Level

NANA

80400 171200

9.7.31 21st Energy Level

NANA

87000 179100

9.7.33 22nd Energy Level

NANA

93400 184900

9.7.35 23rd Energy Level

NANA

98420 198800

9.7.37 24th Energy Level

NANA

104400 195200

9.7.38 25th Energy Level

NANA

121900 121900

9.7.40 26th Energy Level

NANA

127700 127700

9.7.42 27th Energy Level

NANA

133800 133800

9.7.44 28th Energy Level

NANA

139800 139800

9.7.46 29th Energy Level

NANA

148100 148100

9.7.48 30th Energy Level

NANA

154500 154500

9.8 Electrochemical Equivalent

1.77 g/amp-hr0.75 g/amp-hr

0.16812 8.3209

9.9 Electron Work Function

4.83 eV2.87 eV

2.14 5.65

9.10 Other Chemical Properties

Chemical Stability, Ionization, Solubility

Chemical Stability, Flammability, Ionization, Solubility

10 Atomic

10.1 Atomic Number

7620

3 117

10.2 Electron Configuration

[Xe] 4f¹⁴ 5d⁶ 6s²

[Ar] 4s²

10.3 Crystal Structure

Hexagonal Close Packed (HCP)

Face Centered Cubic (FCC)

10.3.1 Crystal Lattice

10.4 Atom

10.4.1 Number of Protons

7620

3 117

10.4.3 Number of Neutrons

11420

4 184

10.5.1 Number of Electrons

7620

3 117

10.7 Radius of an Atom

10.7.1 Atomic Radius

133.80 pm197.00 pm

112 265

11.1.1 Covalent Radius

NA176.00 pm

96 260

11.4.2 Van der Waals Radius

216.00 pm231.00 pm

139 348

11.5 Atomic Weight

190.23 amu40.08 amu

6.94 294

11.6 Atomic Volume

8.49 cm3/mol29.90 cm3/mol

1.39 71.07

11.7 Adjacent Atomic Numbers

11.7.1 Previous Element

11.7.2 Next Element

11.8 Valence Electron Potential

91.40 (-eV)29.00 (-eV)

8 392.42

11.10 Lattice Constant

273.44 pm558.84 pm

228.58 891.25

11.11 Lattice Angles

π/2, π/2, 2 π/3

π/2, π/2, π/2

11.12 Lattice C/A Ratio

1.58NA

1.567 1.886

12 Mechanical

12.1 Density

12.1.1 Density At Room Temperature

22.59 g/cm³1.55 g/cm³

0.534 40.7

12.2.1 Density When Liquid (at m.p.)

20.00 g/cm31.38 g/cm3

0.512 20

12.4 Tensile Strength

1,000.00 MPaNA

2.5 11000

12.7 Viscosity

NANA

0.001526 0.001526

12.9 Vapor Pressure

12.9.1 Vapor Pressure at 1000 K

NA25.50 (Pa)

2.47E-11 121

12.11.1 Vapor Pressure at 2000 K

0.00 (Pa)NA

2.62E-10 774

13.2 Elasticity properties

13.2.1 Shear Modulus

222.00 GPa7.40 GPa

1.3 222

13.2.2 Bulk Modulus

462.00 GPa17.00 GPa

1.6 462

13.2.4 Young's Modulus

NA20.00 GPa

1.7 528

13.5 Poisson Ratio

0.250.31

0.032 0.47

13.7 Other Mechanical Properties

Ductile

14 Magnetic

14.1 Magnetic Characteristics

14.1.1 Specific Gravity

22.574.58

0.53 4500

14.1.3 Magnetic Ordering

Paramagnetic

Diamagnetic

14.1.4 Permeability

NANA

1.25643E-06 0.0063

14.2.2 Susceptibility

NANA

-0.000166 200000

14.3 Electrical Properties

14.3.1 Electrical Property

Conductor

14.3.2 Resistivity

81.20 nΩ·m33.60 nΩ·m

0.18 961

14.3.4 Electrical Conductivity

0.11 10⁶/cm Ω0.30 10⁶/cm Ω

0.00666 0.63

14.3.6 Electron Affinity

106.10 kJ/mol2.37 kJ/mol

0 222.8

15 Thermal

15.1 Specific Heat

0.13 J/(kg K)0.63 J/(kg K)

0.11 3.6

16.2 Molar Heat Capacity

24.70 J/mol·K25.93 J/mol·K

16.443 62.7

16.3 Thermal Conductivity

87.60 W/m·K201.00 W/m·K

6.3 429

16.5 Critical Temperature

NANA

26.3 3223

16.6 Thermal Expansion

5.10 µm/(m·K)22.30 µm/(m·K)

4.5 97

16.7 Enthalpy

16.7.1 Enthalpy of Vaporization

627.60 kJ/mol150.00 kJ/mol

7.32 799.1

16.7.3 Enthalpy of Fusion

29.30 kJ/mol8.54 kJ/mol

2.1 35.23

17.1.1 Enthalpy of Atomization

669.00 kJ/mol184.00 kJ/mol

61.5 837

17.4 Standard Molar Entropy

32.60 J/mol.K41.60 J/mol.K

9.5 198.1

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