Calcium

Ruthenium

Calcium Ruthenium Comparison

Calcium

Ruthenium

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1 Periodic Table

1.1 Symbol

1.2 Group Number

0 17

1.4 Period Number

2 7

1.6 Block

s block

d block

1.7 Element Family

Alkaline Earth

Transition Metal

1.8 CAS Number

74407027440188

7429905 54386242

2.2 Space Group Name

Fm_ 3m

P63/mmc

2.3 Space Group Number

225.00194.00

11 229

3 Facts

3.1 Interesting Facts

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.

Ruthenium element has been extracted from used nuclear fuel.
Ruthenium metal also produces as a by-product of the Nickel mining.

3.3 Sources

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

By-product of Nickel Refining, Found in Minerals, Mining

3.5 History

3.5.1 Who Discovered

Humphry Davy

Karl Ernst Claus

3.5.2 Discovery

In 1808

In 1844

3.7 Abundance

3.7.1 Abundance In Universe

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

5E-09 0.11

3.7.2 Abundance In Sun

~0.007 %~0.0000005 %

1E-08 0.1

3.7.4 Abundance In Meteorites

1.10 %0.00 %

1.7E-07 22

3.7.5 Abundance In Earth's Crust

5.00 %0.00 %

9.9E-12 8.1

3.7.7 Abundance In Oceans

0.00 %0.00 %

2E-23 1.1

3.7.8 Abundance In Humans

1.40 %NA

1E-13 1.4

4 Uses

4.1 Uses & Benefits

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.

It is used for producing chip resistors and contact.

Ruthenium oxide is used to coat the anodes cells for chlorine production in chemical industry. It also works as catalysts for ammonia and acetic acid reaction.

4.1.1 Industrial Uses

Chemical Industry

Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry

4.1.2 Medical Uses

Dentistry, Pharmaceutical Industry

Medical Research

4.1.3 Other Uses

Alloys

4.2 Biological Properties

4.2.1 Toxicity

Non Toxic

Low Toxic

4.2.2 Present in Human Body

✔ ✘

4.2.3 In Blood

60.50 Blood/mg dm-3NA

0 1970

4.2.5 In Bone

170,000.00 p.p.m.NA

0 170000

5 Physical

5.1 Melting Point

839.00 °C2,250.00 °C

27 3410

5.3 Boiling Point

1,484.00 °C3,900.00 °C

147 5660

5.5 Appearance

5.5.1 Physical State

Solid

5.5.2 Color

Gray

Silvery White

5.5.3 Luster

Metallic

5.6 Hardness

5.6.1 Mohs Hardness

1.756.50

0.2 8.5

5.6.2 Brinell Hardness

170.00 MPa2,160.00 MPa

0.14 3490

5.8.1 Vickers Hardness

NANA

121 3430

5.10 Speed of Sound

3,810.00 m/s5,970.00 m/s

818 16200

5.13 Optical Properties

5.13.1 Refractive Index

NANA

1.000933 1.7229

6.1.2 Reflectivity

NANA

58 97

6.2 Allotropes

✔ ✘

6.2.1 α Allotropes

Not Available

6.2.2 β Allotropes

Not Available

6.2.3 γ Allotropes

Not Available

7 Chemical

7.1 Chemical Formula

7.2 Isotopes

7.2.1 Known Isotopes

1926

0 38

7.3 Electronegativity

7.3.1 Pauling Electronegativity

1.002.20

0.7 2.54

7.4.1 Sanderson Electronegativity

0.95NA

0.22 2.56

7.6.2 Allred Rochow Electronegativity

1.041.42

0.86 1.82

7.6.3 Mulliken-Jaffe Electronegativity

1.08NA

0.62 2.48

7.6.5 Allen Electronegativity

1.031.54

0.659 2.7

7.8 Electropositivity

7.8.1 Pauling Electropositivity

3.001.80

1.46 3.3

7.9 Ionization Energies

7.9.1 1st Energy Level

589.80 kJ/mol710.20 kJ/mol

375.7 26130

7.9.2 2nd Energy Level

1,145.40 kJ/mol710.22 kJ/mol

710.2162 28750

7.9.4 3rd Energy Level

4,912.40 kJ/mol2,747.00 kJ/mol

1600 34230

7.10.1 4th Energy Level

6,491.00 kJ/molNA

2780 37066

8.1.2 5th Energy Level

8,153.00 kJ/molNA

4305.2 97510

8.1.3 6th Energy Level

10,496.00 kJ/molNA

5715.8 105800

8.1.6 7th Energy level

12,270.00 kJ/molNA

7226.8 114300

8.1.8 8th Energy Level

14,206.00 kJ/molNA

8857.4 125300

8.2.3 9th Energy Level

18,191.00 kJ/molNA

14110 134700

8.2.4 10th Energy Level

20,385.00 kJ/molNA

17100 144300

8.2.6 11th Energy Level

57,110.00 kJ/molNA

19900 169988

8.2.8 12th Energy Level

63,410.00 kJ/molNA

22219 189368

8.2.9 13th Energy Level

70,110.00 kJ/molNA

26930 76015

9.1.1 14th Energy Level

78,890.00 kJ/molNA

29196 86450

9.2.1 15th Energy Level

86,310.00 kJ/molNA

41987 97510

9.2.2 16th Energy Level

94,000.00 kJ/molNA

47206 109480

9.3.1 17th Energy Level

104,900.00 kJ/molNA

52737 122200

9.3.2 18th Energy Level

111,711.00 kJ/molNA

58570 134810

9.4.1 19th Energy Level

NANA

64702 148700

9.5.1 20th Energy Level

NANA

80400 171200

9.5.2 21st Energy Level

NANA

87000 179100

9.6.2 22nd Energy Level

NANA

93400 184900

9.6.3 23rd Energy Level

NANA

98420 198800

9.6.4 24th Energy Level

NANA

104400 195200

9.6.6 25th Energy Level

NANA

121900 121900

9.6.7 26th Energy Level

NANA

127700 127700

9.6.9 27th Energy Level

NANA

133800 133800

9.6.10 28th Energy Level

NANA

139800 139800

9.7.1 29th Energy Level

NANA

148100 148100

9.7.2 30th Energy Level

NANA

154500 154500

9.8 Electrochemical Equivalent

0.75 g/amp-hr1.26 g/amp-hr

0.16812 8.3209

9.9 Electron Work Function

2.87 eV4.71 eV

2.14 5.65

9.10 Other Chemical Properties

Chemical Stability, Flammability, Ionization, Solubility

Anti Corrosion, Ionization, Radioactive Isotopes, Solubility

10 Atomic

10.1 Atomic Number

2044

3 117

10.2 Electron Configuration

[Ar] 4s²

[Kr] 4d⁷ 5s¹

10.3 Crystal Structure

Face Centered Cubic (FCC)

Hexagonal Close Packed (HCP)

10.3.1 Crystal Lattice

10.4 Atom

10.4.1 Number of Protons

2044

3 117

10.4.2 Number of Neutrons

2057

4 184

10.4.3 Number of Electrons

2044

3 117

10.5 Radius of an Atom

10.5.1 Atomic Radius

197.00 pm134.00 pm

112 265

10.5.2 Covalent Radius

176.00 pm146.00 pm

96 260

10.5.3 Van der Waals Radius

231.00 pm200.00 pm

139 348

10.6 Atomic Weight

40.08 amu101.07 amu

6.94 294

10.7 Atomic Volume

29.90 cm3/mol8.30 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

29.00 (-eV)64.00 (-eV)

8 392.42

10.10 Lattice Constant

558.84 pm270.59 pm

228.58 891.25

10.11 Lattice Angles

π/2, π/2, π/2

π/2, π/2, 2 π/3

10.12 Lattice C/A Ratio

NA1.58

1.567 1.886

11 Mechanical

11.1 Density

11.1.1 Density At Room Temperature

1.55 g/cm³12.45 g/cm³

0.534 40.7

11.1.2 Density When Liquid (at m.p.)

1.38 g/cm310.65 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

25.50 (Pa)NA

2.47E-11 121

11.4.2 Vapor Pressure at 2000 K

NA0.00 (Pa)

2.62E-10 774

11.5 Elasticity properties

11.5.1 Shear Modulus

7.40 GPa173.00 GPa

1.3 222

11.5.2 Bulk Modulus

17.00 GPa220.00 GPa

1.6 462

11.5.3 Young's Modulus

20.00 GPa447.00 GPa

1.7 528

11.6 Poisson Ratio

0.310.30

0.032 0.47

11.7 Other Mechanical Properties

Ductile, Malleable

12 Magnetic

12.1 Magnetic Characteristics

12.1.1 Specific Gravity

4.5812.45

0.53 4500

12.1.2 Magnetic Ordering

Diamagnetic

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

33.60 nΩ·m71.00 nΩ·m

0.18 961

12.2.3 Electrical Conductivity

0.30 10⁶/cm Ω0.14 10⁶/cm Ω

0.00666 0.63

12.2.4 Electron Affinity

2.37 kJ/mol101.30 kJ/mol

0 222.8

13 Thermal

13.1 Specific Heat

0.63 J/(kg K)0.24 J/(kg K)

0.11 3.6

13.2 Molar Heat Capacity

25.93 J/mol·K24.06 J/mol·K

16.443 62.7

13.3 Thermal Conductivity

201.00 W/m·K117.00 W/m·K

6.3 429

13.4 Critical Temperature

NANA

26.3 3223

13.5 Thermal Expansion

22.30 µm/(m·K)6.40 µm/(m·K)

4.5 97

13.6 Enthalpy

13.6.1 Enthalpy of Vaporization

150.00 kJ/mol567.80 kJ/mol

7.32 799.1

13.6.2 Enthalpy of Fusion

8.54 kJ/mol25.50 kJ/mol

2.1 35.23

13.6.3 Enthalpy of Atomization

184.00 kJ/mol603.00 kJ/mol

61.5 837

13.7 Standard Molar Entropy

41.60 J/mol.K28.50 J/mol.K

9.5 198.1

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