Scandium Properties

Scandium

Physical

Melting Point

1,539.00 °C 24

Boiling Point

2,832.00 °C 35

Hardness

Mohs Hardness

Not Available 0

Brinell Hardness

750.00 MPa 12

Vickers Hardness

Not Available 0

Optical Properties

Refractive Index

Not Available 0

Reflectivity

Not Available 0

Speed of Sound

Not Available 0

Allotropes

No 0

α Allotropes

Not Available 0

β Allotropes

Not Available 0

γ Allotropes

Not Available 0

Chemical

Chemical Formula

Sc 0

Isotopes

Known Isotopes

13 26

Electronegativity

Pauling Electronegativity

1.36 29

Sanderson Electronegativity

1.02 21

Allred Rochow Electronegativity

1.20 27

Mulliken-Jaffe Electronegativity

Not Available 0

Allen Electronegativity

1.19 36

Electropositivity

Pauling Electropositivity

2.64 25

Ionization Energies

1st Energy Level

633.10 kJ/mol 46

2nd Energy Level

1,235.00 kJ/mol 57

3rd Energy Level

2,388.60 kJ/mol 52

Electrochemical Equivalent

0.56 g/amp-hr 67

Electron Work Function

3.50 eV 31

Other Chemical Properties

Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility 0

Mechanical

Density

Density At Room Temperature

2.99 g/cm³ 73

Density When Liquid (at m.p.)

2.80 g/cm3 51

Vapor Pressure

Vapor Pressure at 1000 K

0.00 (Pa) 22

Vapor Pressure at 2000 K

91.30 (Pa) 3

Tensile Strength

Not Available 0

Viscosity

Not Available 0

Elasticity properties

Shear Modulus

29.10 GPa 24

Bulk Modulus

56.60 GPa 21

Young's Modulus

74.40 GPa 26

Poisson Ratio

0.28 18

Other Mechanical Properties

NA 0

Periodic Table

Symbol

Sc 0

Group Number

3 15

Period Number

4 4

Block

d block 0

Element Family

Transition Metal 0

Atomic

Atomic Number

21 85

Atomic Weight

44.96 amu 79

Atomic Volume

15.00 cm3/mol 34

Electron Configuration

[Ar] 3d¹ 4s² 0

Valence Electron Potential

58.00 (-eV) 24

Atom

Number of Protons

21 84

Number of Neutrons

24 63

Number of Electrons

21 84

Crystal Structure

Hexagonal Close Packed (HCP) 0

Crystal Lattice

HCP-Crystal-Structure-of-Scandium.jpg#100 0

Radius of an Atom

Atomic Radius

162.00 pm 26

Covalent Radius

170.00 pm 25

Van der Waals Radius

211.00 pm 25

Lattice Constant

330.90 pm 49

Lattice Angles

π/2, π/2, 2 π/3 0

Lattice C/A Ratio

1.59 7

Adjacent Atomic Numbers

Next Element

11 0

Previous Element

12 0

Magnetic

Electrical Properties

Resistivity

562.00 nΩ·m 10

Electrical Conductivity

0.02 10⁶/cm Ω 46

Electron Affinity

18.10 kJ/mol 33

Electrical Property

Conductor 0

Magnetic Characteristics

Specific Gravity

2.99 61

Magnetic Ordering

Paramagnetic 0

Permeability

Not Available 0

Susceptibility

Not Available 0

Thermal

Specific Heat

0.60 J/(kg K) 8

Thermal Conductivity

15.80 W/m·K 53

Critical Temperature

Not Available 0

Molar Heat Capacity

25.52 J/mol·K 37

Thermal Expansion

10.20 µm/(m·K) 39

Standard Molar Entropy

34.60 J/mol.K 44

Enthalpy

Enthalpy of Vaporization

314.20 kJ/mol 28

Enthalpy of Fusion

14.10 kJ/mol 25

Enthalpy of Atomization

343.00 kJ/mol 28

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