Roentgenium

Scandium

Roentgenium vs Scandium

Roentgenium

Scandium

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1 Periodic Table

1.1 Symbol

1.2 Group Number

113

0 17

1.3 Period Number

2 7

1.4 Block

d block

1.5 Element Family

Unknown

Transition Metal

1.6 CAS Number

543862427440202

7429905 54386242

1.7 Space Group Name

Not Available

P63/mmc

1.8 Space Group Number

194.00194.00

11 229

2 Facts

2.1 Interesting Facts

Not Available

Scandium is known as one of the rare earth elements.
Scandium metal found in rare minerals called Wolframite .

2.2 Sources

Synthetically Produced

Found in Minerals, Mining, Ores of metals, Ores of Minerals

2.3 History

2.3.1 Who Discovered

Gesellschaft für Schwerionenforschung

Lars Fredrik Nilson

2.3.2 Discovery

In 1994

In 1879

2.4 Abundance

2.4.1 Abundance In Universe

NA3 * 10^-6 %

5E-09 0.11

2.4.2 Abundance In Sun

~-9999 %~0.000004 %

1E-08 0.1

2.4.3 Abundance In Meteorites

NA0.00 %

1.7E-07 22

2.4.4 Abundance In Earth's Crust

NA0.00 %

9.9E-12 8.1

2.4.5 Abundance In Oceans

NA0.00 %

2E-23 1.1

2.4.6 Abundance In Humans

NANA

1E-13 1.4

3 Uses

3.1 Uses & Benefits

Currently known uses of Roentgenium metal are limited to research purpose only.

Uses of Scandium are limited to research purpose only. However, it has very low density and higher melting point.
Its compounds like scandium iodide is used in mercury vapor lamps to produce very bright white light.

3.1.1 Industrial Uses

Electrical Industry, Electronic Industry

3.1.2 Medical Uses

3.1.3 Other Uses

Research Purposes

Alloys

3.2 Biological Properties

3.2.1 Toxicity

Unknown

Non Toxic

3.2.2 Present in Human Body

✔ ✘

3.2.3 In Blood

0.00 Blood/mg dm-30.01 Blood/mg dm-3

0 1970

3.2.4 In Bone

0.00 p.p.m.0.00 p.p.m.

0 170000

4 Physical

4.1 Melting Point

NA1,539.00 °C

27 3410

4.2 Boiling Point

NA2,832.00 °C

147 5660

4.3 Appearance

4.3.1 Physical State

Solid

4.3.2 Color

Silver

Silvery White

4.3.3 Luster

Unknown Luster

Lustrous

4.4 Hardness

4.4.1 Mohs Hardness

NANA

0.2 8.5

4.4.2 Brinell Hardness

NA750.00 MPa

0.14 3490

4.4.3 Vickers Hardness

NANA

121 3430

4.5 Speed of Sound

NANA

818 16200

4.6 Optical Properties

4.6.1 Refractive Index

NANA

1.000933 1.7229

4.6.2 Reflectivity

NANA

58 97

4.7 Allotropes

✔ ✘

4.7.1 α Allotropes

Not Available

4.7.2 β Allotropes

Not Available

4.7.3 γ Allotropes

Not Available

5 Chemical

5.1 Chemical Formula

5.2 Isotopes

5.2.1 Known Isotopes

113

0 38

5.3 Electronegativity

5.3.1 Pauling Electronegativity

NA1.36

0.7 2.54

5.3.2 Sanderson Electronegativity

NA1.02

0.22 2.56

5.3.3 Allred Rochow Electronegativity

NA1.20

0.86 1.82

5.3.4 Mulliken-Jaffe Electronegativity

NANA

0.62 2.48

5.3.5 Allen Electronegativity

NA1.19

0.659 2.7

5.4 Electropositivity

5.4.1 Pauling Electropositivity

NA2.64

1.46 3.3

5.5 Ionization Energies

5.5.1 1st Energy Level

1,022.70 kJ/mol633.10 kJ/mol

375.7 26130

5.5.2 2nd Energy Level

2,074.40 kJ/mol1,235.00 kJ/mol

710.2162 28750

5.5.3 3rd Energy Level

3,077.90 kJ/mol2,388.60 kJ/mol

1600 34230

5.5.4 4th Energy Level

4,052.40 kJ/mol7,090.60 kJ/mol

2780 37066

5.5.5 5th Energy Level

5,306.70 kJ/mol8,843.00 kJ/mol

4305.2 97510

5.5.6 6th Energy Level

NA10,679.00 kJ/mol

5715.8 105800

5.5.7 7th Energy level

NA13,310.00 kJ/mol

7226.8 114300

5.5.8 8th Energy Level

NA15,250.00 kJ/mol

8857.4 125300

5.5.9 9th Energy Level

NA17,370.00 kJ/mol

14110 134700

5.5.10 10th Energy Level

NA21,726.00 kJ/mol

17100 144300

5.5.11 11th Energy Level

NA24,102.00 kJ/mol

19900 169988

5.5.12 12th Energy Level

NA66,320.00 kJ/mol

22219 189368

5.5.13 13th Energy Level

NA73,010.00 kJ/mol

26930 76015

5.5.14 14th Energy Level

NA80,160.00 kJ/mol

29196 86450

5.5.15 15th Energy Level

NA89,490.00 kJ/mol

41987 97510

5.5.16 16th Energy Level

NA97,400.00 kJ/mol

47206 109480

5.5.17 17th Energy Level

NA105,600.00 kJ/mol

52737 122200

5.5.18 18th Energy Level

NA117,000.00 kJ/mol

58570 134810

5.5.19 19th Energy Level

NA124,270.00 kJ/mol

64702 148700

5.5.20 20th Energy Level

NANA

80400 171200

5.5.21 21st Energy Level

NANA

87000 179100

5.5.22 22nd Energy Level

NANA

93400 184900

5.5.23 23rd Energy Level

NANA

98420 198800

5.5.24 24th Energy Level

NANA

104400 195200

5.5.25 25th Energy Level

NANA

121900 121900

5.5.26 26th Energy Level

NANA

127700 127700

5.5.27 27th Energy Level

NANA

133800 133800

5.5.28 28th Energy Level

NANA

139800 139800

5.5.29 29th Energy Level

NANA

148100 148100

5.5.30 30th Energy Level

NANA

154500 154500

5.6 Electrochemical Equivalent

NA0.56 g/amp-hr

0.16812 8.3209

5.7 Electron Work Function

NA3.50 eV

2.14 5.65

5.8 Other Chemical Properties

Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility

6 Atomic

6.1 Atomic Number

11121

3 117

6.2 Electron Configuration

[Rn] 5f¹⁴ 6d⁹ 7s²

[Ar] 3d¹ 4s²

6.3 Crystal Structure

Body Centered Cubic (BCC)

Hexagonal Close Packed (HCP)

6.3.1 Crystal Lattice

6.4 Atom

6.4.1 Number of Protons

11121

3 117

6.4.2 Number of Neutrons

16124

4 184

6.4.3 Number of Electrons

11121

3 117

6.5 Radius of an Atom

6.5.1 Atomic Radius

NA162.00 pm

112 265

6.5.2 Covalent Radius

NA170.00 pm

96 260

6.5.3 Van der Waals Radius

NA211.00 pm

139 348

6.6 Atomic Weight

281.00 amu44.96 amu

6.94 294

6.7 Atomic Volume

NA15.00 cm3/mol

1.39 71.07

6.8 Adjacent Atomic Numbers

6.8.1 Previous Element

6.8.2 Next Element

6.9 Valence Electron Potential

NA58.00 (-eV)

8 392.42

6.10 Lattice Constant

NA330.90 pm

228.58 891.25

6.11 Lattice Angles

π/2, π/2, 2 π/3

6.12 Lattice C/A Ratio

NA1.59

1.567 1.886

7 Mechanical

7.1 Density

7.1.1 Density At Room Temperature

28.70 g/cm³2.99 g/cm³

0.534 40.7

7.1.2 Density When Liquid (at m.p.)

NA2.80 g/cm3

0.512 20

7.2 Tensile Strength

NANA

2.5 11000

7.3 Viscosity

NANA

0.001526 0.001526

7.4 Vapor Pressure

7.4.1 Vapor Pressure at 1000 K

NA0.00 (Pa)

2.47E-11 121

7.4.2 Vapor Pressure at 2000 K

NA91.30 (Pa)

2.62E-10 774

7.5 Elasticity properties

7.5.1 Shear Modulus

NA29.10 GPa

1.3 222

7.5.2 Bulk Modulus

NA56.60 GPa

1.6 462

7.5.3 Young's Modulus

NA74.40 GPa

1.7 528

7.6 Poisson Ratio

NA0.28

0.032 0.47

7.7 Other Mechanical Properties

Unknown

8 Magnetic

8.1 Magnetic Characteristics

8.1.1 Specific Gravity

NA2.99

0.53 4500

8.1.2 Magnetic Ordering

Unknown

Paramagnetic

8.1.3 Permeability

NANA

1.25643E-06 0.0063

8.1.4 Susceptibility

NANA

-0.000166 200000

8.2 Electrical Properties

8.2.1 Electrical Property

Unknown

Conductor

8.2.2 Resistivity

NA562.00 nΩ·m

0.18 961

8.2.3 Electrical Conductivity

NA0.02 10⁶/cm Ω

0.00666 0.63

8.2.4 Electron Affinity

NA18.10 kJ/mol

0 222.8

9 Thermal

9.1 Specific Heat

NA0.60 J/(kg K)

0.11 3.6

9.2 Molar Heat Capacity

NA25.52 J/mol·K

16.443 62.7

9.3 Thermal Conductivity

NA15.80 W/m·K

6.3 429

9.4 Critical Temperature

NANA

26.3 3223

9.5 Thermal Expansion

NA10.20 µm/(m·K)

4.5 97

9.6 Enthalpy

9.6.1 Enthalpy of Vaporization

NA314.20 kJ/mol

7.32 799.1

9.6.2 Enthalpy of Fusion

NA14.10 kJ/mol

2.1 35.23

9.6.3 Enthalpy of Atomization

NA343.00 kJ/mol

61.5 837

9.7 Standard Molar Entropy

NA34.60 J/mol.K

9.5 198.1

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