Yttrium Properties

Yttrium

Physical

Melting Point

1,523.00 °C 27

Boiling Point

3,337.00 °C 21

Hardness

Mohs Hardness

Not Available 0

Brinell Hardness

589.00 MPa 22

Vickers Hardness

Not Available 0

Optical Properties

Refractive Index

Not Available 0

Reflectivity

Not Available 0

Speed of Sound

3,300.00 m/s 23

Allotropes

No 0

α Allotropes

Not Available 0

β Allotropes

Not Available 0

γ Allotropes

Not Available 0

Chemical

Chemical Formula

Y 0

Isotopes

Known Isotopes

19 20

Electronegativity

Pauling Electronegativity

1.22 38

Sanderson Electronegativity

0.65 29

Allred Rochow Electronegativity

1.11 29

Mulliken-Jaffe Electronegativity

Not Available 0

Allen Electronegativity

1.12 38

Electropositivity

Pauling Electropositivity

2.78 16

Ionization Energies

1st Energy Level

600.00 kJ/mol 53

2nd Energy Level

1,180.00 kJ/mol 63

3rd Energy Level

1,980.00 kJ/mol 76

Electrochemical Equivalent

1.11 g/amp-hr 56

Electron Work Function

3.10 eV 35

Other Chemical Properties

Chemical Stability, Flammable, Ionization, Radioactive Isotopes, Solubility 0

Mechanical

Density

Density At Room Temperature

4.47 g/cm³ 71

Density When Liquid (at m.p.)

4.24 g/cm3 48

Vapor Pressure

Vapor Pressure at 1000 K

0.00 (Pa) 32

Vapor Pressure at 2000 K

4.27 (Pa) 10

Tensile Strength

Not Available 0

Viscosity

Not Available 0

Elasticity properties

Shear Modulus

25.60 GPa 30

Bulk Modulus

41.20 GPa 30

Young's Modulus

63.50 GPa 32

Poisson Ratio

0.24 26

Other Mechanical Properties

Ductile 0

Periodic Table

Symbol

Y 0

Group Number

3 15

Period Number

5 3

Block

d block 0

Element Family

Transition Metal 0

Atomic

Atomic Number

39 73

Atomic Weight

88.91 amu 67

Atomic Volume

19.80 cm3/mol 21

Electron Configuration

[Kr] 4d¹ 5s² 0

Valence Electron Potential

48.00 (-eV) 30

Atom

Number of Protons

39 72

Number of Neutrons

50 55

Number of Electrons

39 72

Crystal Structure

Hexagonal Close Packed (HCP) 0

Crystal Lattice

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

Radius of an Atom

Atomic Radius

180.00 pm 14

Covalent Radius

190.00 pm 18

Van der Waals Radius

200.00 pm 28

Lattice Constant

364.74 pm 31

Lattice Angles

π/2, π/2, 2 π/3 0

Lattice C/A Ratio

1.57 16

Adjacent Atomic Numbers

Next Element

56 0

Previous Element

37 0

Magnetic

Electrical Properties

Resistivity

596.00 nΩ·m 8

Electrical Conductivity

0.02 10⁶/cm Ω 47

Electron Affinity

29.60 kJ/mol 30

Electrical Property

Conductor 0

Magnetic Characteristics

Specific Gravity

4.47 59

Magnetic Ordering

Paramagnetic 0

Permeability

Not Available 0

Susceptibility

Not Available 0

Thermal

Specific Heat

0.30 J/(kg K) 18

Thermal Conductivity

17.20 W/m·K 48

Critical Temperature

Not Available 0

Molar Heat Capacity

26.53 J/mol·K 27

Thermal Expansion

10.60 µm/(m·K) 37

Standard Molar Entropy

44.40 J/mol.K 33

Enthalpy

Enthalpy of Vaporization

393.00 kJ/mol 18

Enthalpy of Fusion

17.15 kJ/mol 16

Enthalpy of Atomization

418.00 kJ/mol 18

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Yttrium Properties

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