
Lutetium (Lu) is a chemical element of the periodic table, located in the group 3 and the period 6, and has the atomic number 71. It is the last element in the lanthanide series. It is a silvery-white metal, whose name comes from “Lutetia”, the ancient Latin name for Paris, in the Roman era. It is counted as one of the rare earth elements.
1 |
2 |
||||||||||||||||||
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
||||||||||||
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
||||||||||||
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
32 |
33 |
34 |
35 |
36 |
||
37 |
38 |
39 |
40 |
41 |
42 |
43 |
44 |
45 |
46 |
47 |
48 |
49 |
50 |
51 |
52 |
53 |
54 |
||
55 |
56 |
72 |
73 |
74 |
75 |
76 |
77 |
78 |
79 |
80 |
81 |
82 |
83 |
84 |
85 |
86 |
|||
87 |
88 |
104 |
105 |
106 |
107 |
108 |
109 |
110 |
111 |
112 |
113 |
114 |
115 |
116 |
117 |
118 |
|||
57 |
58 |
59 |
60 |
61 |
62 |
63 |
64 |
65 |
66 |
67 |
68 |
69 |
70 |
71 |
|||||
89 |
90 |
91 |
92 |
93 |
94 |
95 |
96 |
97 |
98 |
99 |
100 |
101 |
102 |
103 |
– d block |
FAQs on Lutetium Element
Lutetium |
---|
‣ Lutetium appearance: silvery white |
‣ Who discovered lutetium? When was lutetium discovered? Discovery: Carl Auer von Welsbach and Georges Urbain (1906) First isolation: Carl Auer von Welsbach (1906) |
‣ Where is lutetium located on the periodic table?![]() Location: Lutetium is found in the sixth row of the periodic table, next to the ytterbium element. |
‣ What’s the atomic mass number for lutetium? Atomic number (Z): 71 |
‣ Lutetium symbol: Lu |
‣ Lutetium atomic weight: 174.9668 |
‣ What block does lutetium belong to? Block: d-block |
‣ In what group is the element lutetium? Group: 3 |
‣ Period of lutetium in the periodic table Period: 6 |
‣ Lutetium atomic radius: empirical: 174 pm |
‣ Lutetium covalent radius: 187±8 pm |
‣ Lutetium melting point: 1925 K (1652 °C, 3006 °F) |
‣ Lutetium boiling point: 3675 K (3402 °C, 6156 °F) |
‣ Electrons per shell of lutetium: 2, 8, 18, 32, 9, 2 |
‣ What is the electron configuration of lutetium? Electron configuration: [Xe] 4f14 5d1 6s2 |
‣ Lutetium ionization energies: 1st: 523.5 kJ/mol 2nd: 1340 kJ/mol 3rd: 2022.3 kJ/mol |
‣ What is the phase of lutetium? Phase (at r.t): solid |
‣ Density of the element lutetium Density (near r.t): 9.841 g/cm3 when liquid (at m.p): 9.3 g/cm3 |
‣ Lutetium magnetic ordering: paramagnetic |
‣ Lutetium natural occurrence: primordial |
‣ Lutetium oxidation state: +3 |
‣ Electronegativity of lutetium: Pauling scale: 1.27 |
‣ Lutetium poisson’s ratio: 0.261 |
‣ Lutetium heat of fusion: ca. 22 kJ/mol |
‣ Lutetium heat of vaporization: 414 kJ/mol |
‣ Lutetium molar heat capacity: 26.86 J/(mol K) |
‣ What is the crystal structure of lutetium? Crystal structure: hexagonal close-packed (hcp) |
‣ Thermal expansion of lutetium: poly: 9.9 µm/(m.K) (at r.t) |
‣ Thermal conductivity of lutetium: 16.4 W/(m.K) |
‣ Lutetium electrical resistivity: poly: 582 nΩ.m (at r.t) |
‣ Lutetium hardness Vickers hardness: 755-1160 MPa Brinell hardness: 890-1300 MPa |
‣ Young’s modulus of lutetium: 68.6 GPa |
‣ Shear modulus of lutetium: 27.2 GPa |
‣ Bulk modulus of lutetium: 47.6 GPa |
‣ Lutetium CAS number: 7439-94-3 |
‣ Lutetium vapor pressure
Vapor pressure | ||||||
---|---|---|---|---|---|---|
P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
at T (K) | 1906 | 2103 | 2346 | (2653) | (3072) | (3663) |
‣ How many isotopes of lutetium are there?
Main isotopes of lutetium | ||||
---|---|---|---|---|
Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
173Lu | syn | 1.37 y | ε | 173Yb |
174Lu | syn | 3.31 y | ε | 174Yb |
175Lu | 97.104 % | stable | ||
176Lu | 2.599 % | 3.78 × 1010 y | β– | 176Hf |
.
.
.
Related:
Also Read:
- Hydrogen
- Helium
- Lithium
- Beryllium
- Boron
- Carbon
- Nitrogen
- Oxygen
- Fluorine
- Neon
- Sodium
- Magnesium
- Aluminium
- Silicon
- Phosphorus
- Sulfur
- Chlorine
- Argon
- Potassium
- Calcium
- Scandium
- Titanium
- Vanadium
- Chromium
- Manganese
- Iron
- Cobalt
- Nickel
- Copper
- Zinc
- Gallium
- Germanium
- Arsenic
- Selenium
- Bromine
- Krypton
- Rubidium
- Strontium
- Yttrium
- Zirconium
- Niobium
- Molybdenum
- Technetium
- Ruthenium
- Rhodium
- Palladium
- Silver
- Cadmium
- Indium
- Tin
- Antimony
- Tellurium
- Iodine
- Xenon
- Caesium
- Barium
- Lanthanum
- Cerium
- Praseodymium
- Neodymium
- Promethium
- Samarium
- Europium
- Gadolinium
- Terbium
- Dysprosium
- Holmium
- Erbium
- Thulium
- Ytterbium
- Hafnium
- Tantalum
- Tungsten
- Rhenium
- Osmium
- Iridium
- Platinum
- Gold
- Mercury
- Thallium
- Lead
- Bismuth
- Polonium
- Astatine
- Radon
- Francium
- Radium
- Actinium
- Thorium
- Protactinium
- Uranium
- Neptunium
- Plutonium
- Americium
- Curium
- Berkelium
- Californium
- Einsteinium
- Fermium
- Mendelevium
- Nobelium
- Lawrencium
- Rutherfordium
- Dubnium
- Seaborgium
- Bohrium
- Hassium
- Meitnerium
- Darmstadtium
- Roentgenium
- Copernicium
- Nihonium
- Flerovium
- Moscovium
- Livermorium
- Tennessine
- Oganesson