Lu Lutetium – Element Information, Facts, Properties, Trends,Uses, Comparison with other elements

71
Lu
Lutetium

Lutetium

Element 71 of Periodic table is Lutetium with atomic number 71, atomic weight 174.967. Lutetium, symbol Lu, has a Simple Hexagonal structure and Silver color. Lutetium is a lanthanide element. Know everything about Lutetium Facts, Physical Properties, Chemical Properties, Electronic configuration, Atomic and Crystal Structure.

71 Lu - Lutetium | SchoolMyKids

Lutetium is a chemical element with symbol Lu and atomic number 71. It is a silvery white metal, which resists corrosion in dry, but not in moist air. It is considered the first element of the 6th-period transition metals and the last element in the lanthanide series, and is traditionally counted among the rare earths.

How to Locate Lutetium on Periodic Table

Periodic table is arranged by atomic number, number of protons in the nucleus which is same as number of electrons. The atomic number increases from left to right. Periodic table starts at top left ( Atomic number 1) and ends at bottom right (atomic number 118). Therefore you can directly look for atomic number 71 to find Lutetium on periodic table.

Another way to read periodic table and locate an element is by using group number (column) and period number (row). To locate Lutetium on periodic table look for cross section of group 3 and period 6 in the modern periodic table.

Table of Contents

Lutetium History

The element Lutetium was discovered by Georges Urbain in year 1907 in France and Germany . Lutetium derived its name from Lutetia, the Latin name for Paris

Lutetium Presence: Abundance in Nature and Around Us

The table below shows the abundance of Lutetium in Universe, Sun, Meteorites, Earth's Crust, Oceans and Human Body.

  Ppb by weight (1ppb =10^-7 %)
Abundance in Universe 1×10-8%
Abundance in Sun 1×10-7%
Abundance in Meteorites 2.9×10-6%
Abundance in Earth's Crust 5.6e-07
Abundance in Oceans 1.5×10-11%
Abundance in Humans N/A

Crystal Structure of Lutetium

The solid state structure of Lutetium is Simple Hexagonal.

The Crystal structure can be described in terms of its unit Cell. The unit Cells repeats itself in three dimensional space to form the structure.

Unit Cell Parameters

The unit cell is represented in terms of its lattice parameters, which are the lengths of the cell edges Lattice Constants (a, b and c)

a b c
350.31 350.31 555.09 pm

and the angles between them Lattice Angles (alpha, beta and gamma).

alpha beta gamma
π/2 π/2 2 π/3

The positions of the atoms inside the unit cell are described by the set of atomic positions ( xi, yi, zi) measured from a reference lattice point.

The symmetry properties of the crystal are described by the concept of space groups. All possible symmetric arrangements of particles in three-dimensional space are described by the 230 space groups (219 distinct types, or 230 if chiral copies are considered distinct.

Space Group Name P63/mmc 71 Lu Lutetium - Crystal Structure | SchoolMyKids
Space Group Number 194
Crystal Structure Simple Hexagonal

Lutetium Atomic and Orbital Properties

Lutetium atoms have 71 electrons and the electronic shell structure is [2, 8, 18, 32, 9, 2] with Atomic Term Symbol (Quantum Numbers) 2D3/2.

Atomic Number 71
Number of Electrons (with no charge) 71
Number of Protons 71
Mass Number 175
Number of Neutrons 104
Shell structure (Electrons per energy level) [2, 8, 18, 32, 9, 2]
Electron Configuration [Xe] 4f14 5d1 6s2
Valence Electrons 5d1 6s2
Oxidation State 2;3
Atomic Term Symbol (Quantum Numbers) 2D3/2

Shell Structure of Lutetium - Electrons per energy level

71 Lu Lutetium - Electron Shell Structure | SchoolMyKids
n s p d f
1 K 2
2 L 2 6
3 M 2 6 10
4 N 2 6 10 14
5 O 2 6 1
6 P 2

Ground State Electronic Configuration of Lutetium - neutral Lutetium atom

The ground state electronic configuration of Neutral Lutetium atom is [Xe] 4f14 5d1 6s2. The portion of Lutetium configuration that is equivalent to the noble gas of the preceding period, is abbreviated as [Xe]. For atoms with many electrons, this notation can become lengthy and so an abbreviated notation is used.This is important as it is the Valence electrons 4f14 5d1 6s2, electrons in the outermost shell that determine the chemical properties of the element.

Unabbreviated electronic configuration of neutral Lutetium

Complete ground state electronic configuration for the Lutetium atom, Unabbreviated electronic configuration

1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d1 6s2

Atomic Structure of Lutetium

Lutetium atomic radius is 217 pm, while it's covalent radius is 160 pm.

Atomic Radius

217 pm (2.17 Å)

Atomic Volume 17.7793923382 cm3
Covalent Radius 160 pm (1.6 Å)
Van der Waals Radius N/A
Neutron Cross Section 84 σa/barns

Atomic Spectrum of Lutetium

Atomic Spectrum of Lutetium | SchoolMyKids

Lutetium Chemical Properties: Lutetium Ionization Energies and electron affinity

The electron affinity of Lutetium is 50 kJ/mol

Valence 3
Electronegativity 1.27
ElectronAffinity 50 kJ/mol

Ionization Energy of Lutetium

Refer to table below for Ionization energies of Lutetium

Ionization energy number Enthalpy - kJ/mol
1 523.5
2 1340
3 2022.3
4 4370
5 6445

Lutetium Physical Properties

Refer to below table for Lutetium Physical Properties

Density 9.841 g/cm3
Molar Volume 17.7793923382 cm3

Elastic Properties

Young Modulus 69 GPa
Shear Modulus 27 GPa
Bulk Modulus 48 GPa
Poisson Ratio 0.26

Hardness of Lutetium - Tests to Measure of Hardness of Element

Mohs Hardness N/A
Vickers Hardness 1160 MPa
Brinell Hardness 893 MPa

Lutetium Electrical Properties

Lutetium is Conductor of electricity. Refer to table below for the Electrical properties of Lutetium

Electrical Conductivity 1.8×106 S/m
Resistivity 5.6×10-7 m Ω
Superconducting Point 0.1

Lutetium Heat and Conduction Properties

Thermal Conductivity 16 W/(m K)
Thermal Expansion 9.9×10-6 K-1

Lutetium Magnetic Properties

Magnetic Type Paramagnetic
Curie Point N/A
Mass Magnetic Susceptibility 1.2×10-9
Molar Magnetic Susceptibility 2.1×10-10
Volume Magnetic Susceptibility 1.18e-05

Optical Properties of Lutetium

Refractive Index N/A

Acoustic Properties of Lutetium

Speed of Sound N/A

Lutetium Thermal Properties - Enthalpies and thermodynamics

Refer to table below for Thermal properties of Lutetium

Melting Point 1936 K (1663 °C)
Boiling Point 3675 K (3402 °C)
Critical Temperature N/A
Superconducting Point 0.1

Enthalpies of Lutetium

Heat of Fusion 22 kJ/mol
Heat of Vaporization 415 kJ/mol
Heat of Combustion N/A

Lutetium Isotopes - Nuclear Properties of Lutetium

Isotopes of rhodium. Naturally occurring Lutetium has 1 stable isotope - 175Lu.

Isotope Isotope Mass % Abundance T half Decay Mode
150Lu  
151Lu  
152Lu  
153Lu  
154Lu  
155Lu  
156Lu  
157Lu  
158Lu  
159Lu  
160Lu  
161Lu  
162Lu  
163Lu  
164Lu  
165Lu  
166Lu  
167Lu  
168Lu  
169Lu  
170Lu  
171Lu  
172Lu  
173Lu  
174Lu  
175Lu   97.41% Stable N/A
176Lu   2.59%
177Lu  
178Lu  
179Lu  
180Lu  
181Lu  
182Lu  
183Lu  
184Lu  

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS Number CAS7439-94-3
RTECS Number N/A
DOT Hazard Class 4.1
DOT Numbers 3089
EU Number N/A
NFPA Fire Rating N/A
NFPA Hazards N/A
NFPA Health Rating N/A
NFPA Reactivity Rating N/A
Autoignition Point N/A
Flashpoint N/A

Database Search

List of unique identifiers to search the element in various chemical registry databases

Database Identifier number
CAS Number - Chemical Abstracts Service (CAS) CAS7439-94-3
CID Number CID23929
Gmelin Number N/A
NSC Number N/A
RTECS Number N/A

List of Elements
1 H - Hydrogen
2 He - Helium
3 Li - Lithium
4 Be - Beryllium
5 B - Boron
6 C - Carbon
7 N - Nitrogen
8 O - Oxygen
9 F - Fluorine
10 Ne - Neon
11 Na - Sodium
12 Mg - Magnesium
13 Al - Aluminium
14 Si - Silicon
15 P - Phosphorus
16 S - Sulfur
17 Cl - Chlorine
18 Ar - Argon
19 K - Potassium
20 Ca - Calcium
21 Sc - Scandium
22 Ti - Titanium
23 V - Vanadium
24 Cr - Chromium
25 Mn - Manganese
26 Fe - Iron
27 Co - Cobalt
28 Ni - Nickel
29 Cu - Copper
30 Zn - Zinc
31 Ga - Gallium
32 Ge - Germanium
33 As - Arsenic
34 Se - Selenium
35 Br - Bromine
36 Kr - Krypton
37 Rb - Rubidium
38 Sr - Strontium
39 Y - Yttrium
40 Zr - Zirconium
41 Nb - Niobium
42 Mo - Molybdenum
43 Tc - Technetium
44 Ru - Ruthenium
45 Rh - Rhodium
46 Pd - Palladium
47 Ag - Silver
48 Cd - Cadmium
49 In - Indium
50 Sn - Tin
51 Sb - Antimony
52 Te - Tellurium
53 I - Iodine
54 Xe - Xenon
55 Cs - Cesium
56 Ba - Barium
57 La - Lanthanum
58 Ce - Cerium
59 Pr - Praseodymium
60 Nd - Neodymium
61 Pm - Promethium
62 Sm - Samarium
63 Eu - Europium
64 Gd - Gadolinium
65 Tb - Terbium
66 Dy - Dysprosium
67 Ho - Holmium
68 Er - Erbium
69 Tm - Thulium
70 Yb - Ytterbium
71 Lu - Lutetium
72 Hf - Hafnium
73 Ta - Tantalum
74 W - Tungsten
75 Re - Rhenium
76 Os - Osmium
77 Ir - Iridium
78 Pt - Platinum
79 Au - Gold
80 Hg - Mercury
81 Tl - Thallium
82 Pb - Lead
83 Bi - Bismuth
84 Po - Polonium
85 At - Astatine
86 Rn - Radon
87 Fr - Francium
88 Ra - Radium
89 Ac - Actinium
90 Th - Thorium
91 Pa - Protactinium
92 U - Uranium
93 Np - Neptunium
94 Pu - Plutonium
95 Am - Americium
96 Cm - Curium
97 Bk - Berkelium
98 Cf - Californium
99 Es - Einsteinium
100 Fm - Fermium
101 Md - Mendelevium
102 No - Nobelium
103 Lr - Lawrencium
104 Rf - Rutherfordium
105 Db - Dubnium
106 Sg - Seaborgium
107 Bh - Bohrium
108 Hs - Hassium
109 Mt - Meitnerium
110 Ds - Darmstadtium
111 Rg - Roentgenium
112 Cn - Copernicium
113 Nh - Nihonium
114 Fl - Flerovium
115 Mc - Moscovium
116 Lv - Livermorium
117 Ts - Tennessine
118 Og - Oganesson
Metalloid
Nonmetals
Other Nonmetals
Halogens Noble Gas
Metals
Alkali Metals Alkaline Earth Metals
Transition Metals Post-Transition Metals
Lanthanide Actinide