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.
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.
Read key information and facts about element Lutetium
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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.
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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
The table below shows the abundance of Lutetium in Universe, Sun, Meteorites, Earth's Crust, Oceans and Human Body.
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.
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)
and the angles between them Lattice Angles (alpha, beta and gamma).
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.
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.
Shell Structure of Lutetium - Electrons per energy level
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.
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
Lutetium atomic radius is 217 pm, while it's covalent radius is 160 pm.
217 pm (2.17 Å)
The electron affinity of Lutetium is 50 kJ/mol
Refer to table below for Ionization energies of Lutetium
Refer to below table for Lutetium Physical Properties
Lutetium is Conductor of electricity. Refer to table below for the Electrical properties of Lutetium
Refer to table below for Thermal properties of Lutetium
Isotopes of rhodium. Naturally occurring Lutetium has 1 stable isotope - 175Lu.
List of unique identifiers to search the element in various chemical registry databases