Sm Samarium – Element Information, Facts, Properties, Trends,Uses, Comparison with other elements

62
Sm
Samarium

Samarium

Element 62 of Periodic table is Samarium with atomic number 62, atomic weight 150.36. Samarium, symbol Sm, has a Simple Trigonal structure and Silver color. Samarium is a lanthanide element. Know everything about Samarium Facts, Physical Properties, Chemical Properties, Electronic configuration, Atomic and Crystal Structure.

62 Sm - Samarium | SchoolMyKids

Samarium is a chemical element with symbol Sm and atomic number 62. It is a moderately hard silvery metal that readily oxidizes in air. Being a typical member of the lanthanide series, samarium usually assumes the oxidation state +3.

How to Locate Samarium 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 62 to find Samarium 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 Samarium on periodic table look for cross section of group N/A and period 6 in the modern periodic table.

Table of Contents

Samarium History

The element Samarium was discovered by Lecoq de Boisbaudran in year 1879 in France . Samarium derived its name from Samarskite, the name of the mineral from which it was first isolated

Samarium Presence: Abundance in Nature and Around Us

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

  Ppb by weight (1ppb =10^-7 %)
Abundance in Universe 5×10-7%
Abundance in Sun 1×10-7%
Abundance in Meteorites 1.7e-07
Abundance in Earth's Crust 6e-06
Abundance in Oceans 4.5×10-11%
Abundance in Humans N/A

Crystal Structure of Samarium

The solid state structure of Samarium is Simple Trigonal.

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
362.1 362.1 2625 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 R_ 3m 62 Sm Samarium - Crystal Structure | SchoolMyKids
Space Group Number 166
Crystal Structure Simple Trigonal

Samarium Atomic and Orbital Properties

Samarium atoms have 62 electrons and the electronic shell structure is [2, 8, 18, 24, 8, 2] with Atomic Term Symbol (Quantum Numbers) 7F0.

Atomic Number 62
Number of Electrons (with no charge) 62
Number of Protons 62
Mass Number 150
Number of Neutrons 88
Shell structure (Electrons per energy level) [2, 8, 18, 24, 8, 2]
Electron Configuration [Xe] 4f6 6s2
Valence Electrons 4f6 6s2
Oxidation State 2;3
Atomic Term Symbol (Quantum Numbers) 7F0

Shell Structure of Samarium - Electrons per energy level

62 Sm Samarium - 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 6
5 O 2 6
6 P 2

Ground State Electronic Configuration of Samarium - neutral Samarium atom

The ground state electronic configuration of Neutral Samarium atom is [Xe] 4f6 6s2. The portion of Samarium 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 4f6 6s2, electrons in the outermost shell that determine the chemical properties of the element.

Unabbreviated electronic configuration of neutral Samarium

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

1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f6 6s2

Atomic Structure of Samarium

Samarium atomic radius is 238 pm, while it's covalent radius is N/A.

Atomic Radius

238 pm (2.38 Å)

Atomic Volume 20.4487964096 cm3
Covalent Radius N/A
Van der Waals Radius N/A
Neutron Cross Section 5.9×103 σa/barns

Atomic Spectrum of Samarium

Atomic Spectrum of Samarium | SchoolMyKids

Samarium Chemical Properties: Samarium Ionization Energies and electron affinity

The electron affinity of Samarium is 50 kJ/mol

Valence 3
Electronegativity 1.17
ElectronAffinity 50 kJ/mol

Ionization Energy of Samarium

Refer to table below for Ionization energies of Samarium

Ionization energy number Enthalpy - kJ/mol
1 544.5
2 1070
3 2260
4 3990

Samarium Physical Properties

Refer to below table for Samarium Physical Properties

Density 7.353 g/cm3
Molar Volume 20.4487964096 cm3

Elastic Properties

Young Modulus 50 GPa
Shear Modulus 20 GPa
Bulk Modulus 38 GPa
Poisson Ratio 0.27

Hardness of Samarium - Tests to Measure of Hardness of Element

Mohs Hardness N/A
Vickers Hardness 412 MPa
Brinell Hardness 441 MPa

Samarium Electrical Properties

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

Electrical Conductivity 1.1×106 S/m
Resistivity 9.4×10-7 m Ω
Superconducting Point N/A

Samarium Heat and Conduction Properties

Thermal Conductivity 13 W/(m K)
Thermal Expansion 0.0000127 K-1

Samarium Magnetic Properties

Magnetic Type Paramagnetic
Curie Point N/A
Mass Magnetic Susceptibility 1.11×10-7
Molar Magnetic Susceptibility 1.669×10-8
Volume Magnetic Susceptibility 0.00081618

Optical Properties of Samarium

Refractive Index N/A

Acoustic Properties of Samarium

Speed of Sound 2130 m/s

Samarium Thermal Properties - Enthalpies and thermodynamics

Refer to table below for Thermal properties of Samarium

Melting Point 1345 K (1072 °C)
Boiling Point 2076 K (1803 °C)
Critical Temperature N/A
Superconducting Point N/A

Enthalpies of Samarium

Heat of Fusion 8.6 kJ/mol
Heat of Vaporization 175 kJ/mol
Heat of Combustion N/A

Samarium Isotopes - Nuclear Properties of Samarium

Isotopes of rhodium. Naturally occurring Samarium has 5 stable isotope - 144Sm, 149Sm, 150Sm, 152Sm, 154Sm.

Isotope Isotope Mass % Abundance T half Decay Mode
128Sm  
129Sm  
130Sm  
131Sm  
132Sm  
133Sm  
134Sm  
135Sm  
136Sm  
137Sm  
138Sm  
139Sm  
140Sm  
141Sm  
142Sm  
143Sm  
144Sm   3.07% Stable N/A
145Sm  
146Sm  
147Sm   14.99%
148Sm   11.24%
149Sm   13.82% Stable N/A
150Sm   7.38% Stable N/A
151Sm  
152Sm   26.75% Stable N/A
153Sm  
154Sm   22.75% Stable N/A
155Sm  
156Sm  
157Sm  
158Sm  
159Sm  
160Sm  
161Sm  
162Sm  
163Sm  
164Sm  
165Sm  

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS Number CAS7440-19-9
RTECS Number N/A
DOT Hazard Class 4.1
DOT Numbers 1325
EU Number N/A
NFPA Fire Rating 1
NFPA Hazards N/A
NFPA Health Rating 1
NFPA Reactivity Rating 1
Autoignition Point 150 °C
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) CAS7440-19-9
CID Number CID23951
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