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Periodic Table Element Comparison: Compare Elements - Holmium vs Samarium

Compare Holmium and Samarium

Compare Holmium and Samarium on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Holmium vs Samarium with most reliable information about their properties, attributes, facts, uses etc. You can compare Ho vs Sm on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

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1
1
H
Hydrogen
1.008

Atomic #

Electronic Shell #

Symbol
Name
Atomic Weight
HGas
HgLiquid
CSolid
Metals
Metalloids
NonMetals
Alkali metals
Alkali earth metals
Lanthanoids
Transition metals
Post-transition metals
Other nonmetals
Halogens
Nobel gas
Actinoids
2
He
Helium
4.003
2
3
Li
Lithium
6.941
4
Be
Beryllium
9.012
5
B
Boron
10.811
6
C
Carbon
12.011
7
N
Nitrogen
14.007
8
O
Oxygen
15.999
9
F
Fluorine
18.998
10
Ne
Neon
20.180
3
11
Na
Sodium
22.990
12
Mg
Magnesium
24.305
13
Al
Aluminium
26.982
14
Si
Silicon
28.085
15
P
Phosphorus
30.974
16
S
Sulfur
32.065
17
Cl
Chlorine
35.453
18
Ar
Argon
39.948
4
19
K
Potassium
39.098
20
Ca
Calcium
40.078
21
Sc
Scandium
44.956
22
Ti
Titanium
47.867
23
V
Vanadium
50.941
24
Cr
Chromium
51.996
25
Mn
Manganese
54.938
26
Fe
Iron
55.845
27
Co
Cobalt
58.933
28
Ni
Nickel
58.693
29
Cu
Copper
63.546
30
Zn
Zinc
65.409
31
Ga
Gallium
69.723
32
Ge
Germanium
72.640
33
As
Arsenic
74.922
34
Se
Selenium
78.960
35
Br
Bromine
79.904
36
Kr
Krypton
83.798
5
37
Rb
Rubidium
85.468
38
Sr
Strontium
87.620
39
Y
Yttrium
88.906
40
Zr
Zirconium
91.224
41
Nb
Niobium
92.906
42
Mo
Molybdenum
95.940
43
Tc
Technetium
98
44
Ru
Ruthenium
101.070
45
Rh
Rhodium
102.906
46
Pd
Palladium
106.420
47
Ag
Silver
107.868
48
Cd
Cadmium
112.411
49
In
Indium
114.818
50
Sn
Tin
118.710
51
Sb
Antimony
121.760
52
Te
Tellurium
127.600
53
I
Iodine
126.904
54
Xe
Xenon
131.293
6
55
Cs
Cesium
132.905
56
Ba
Barium
137.327
57 - 71
La - Lu
Lanthanides
72
Hf
Hafnium
178.490
73
Ta
Tantalum
180.948
74
W
Tungsten
183.840
75
Re
Rhenium
186.207
76
Os
Osmium
190.230
77
Ir
Iridium
192.217
78
Pt
Platinum
195.078
79
Au
Gold
196.967
80
Hg
Mercury
200.590
81
Tl
Thallium
204.383
82
Pb
Lead
207.200
83
Bi
Bismuth
208.980
84
Po
Polonium
209
85
At
Astatine
210
86
Rn
Radon
222
7
87
Fr
Francium
223
88
Ra
Radium
226
89 - 103
Ac - Lr
Actinides
104
Rf
Rutherfordium
261
105
Db
Dubnium
262
106
Sg
Seaborgium
266
107
Bh
Bohrium
264
108
Hs
Hassium
277
109
Mt
Meitnerium
268
110
Ds
Darmstadtium
281
111
Rg
Roentgenium
272
112
Cn
Copernicium
285
113
Nh
Nihonium
284
114
Fl
Flerovium
289
115
Mc
Moscovium
288
116
Lv
Livermorium
292
117
Ts
Tennessine
294
118
Og
Oganesson
294
Lanthanides
57
La
Lanthanum
138.905
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.908
60
Nd
Neodymium
144.240
61
Pm
Promethium
145
62
Sm
Samarium
150.360
63
Eu
Europium
151.964
64
Gd
Gadolinium
157.250
65
Tb
Terbium
158.925
66
Dy
Dysprosium
162.500
67
Ho
Holmium
164.930
68
Er
Erbium
167.259
69
Tm
Thulium
168.934
70
Yb
Ytterbium
173.040
71
Lu
Lutetium
174.967
Actinides
89
Ac
Actinium
227
90
Th
Thorium
232.038
91
Pa
Protactinium
231.036
92
U
Uranium
238.029
93
Np
Neptunium
237
94
Pu
Plutonium
244
95
Am
Americium
243
96
Cm
Curium
247
97
Bk
Berkelium
247
98
Cf
Californium
251
99
Es
Einsteinium
252
100
Fm
Fermium
257
101
Md
Mendelevium
258
102
No
Nobelium
259
103
Lr
Lawrencium
262

Facts

NameHolmiumSamarium
Atomic Number6762
Atomic SymbolHoSm
Atomic Weight164.93032 150.36
Phase at STPSolid Solid
ColorSilver Silver
Metallic ClassificationLanthanide Lanthanide
Group in Periodic Tablegroup - group -
Group Name
Period in Periodic Tableperiod 6 period 6
Block in Periodic Tablef -blockf -block
Electronic Configuration[Xe] 4f11 6s2 [Xe] 4f6 6s2
Electronic Shell Structure (Electrons per shell)2, 8, 18, 29, 8, 22, 8, 18, 24, 8, 2
Melting Point1747 K1345 K
Boiling Point2973 K2076 K
CAS NumberCAS7440-60-0 CAS7440-19-9
Neighborhood ElementsNeighborhood Elements of HolmiumNeighborhood Elements of Samarium

History

HistoryThe element Holmium was discovered by J.-L. Soret in year 1878 in Switzerland. Holmium derived its name from Holmia, the New Latin name for Stockholm.The element Samarium was discovered by P.E.L. de Boisbaudran in year 1879 in France. Samarium derived its name from Samarskite, the name of the mineral from which it was first isolated.
DiscoveryJ.-L. Soret (1878)P.E.L. de Boisbaudran (1879)
IsolatedT. Cleve (1879)P.E.L. de Boisbaudran (1879)

Presence: Abundance in Nature and Around Us

Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)

Abundance in Universe0.5 / 0.0045 / 0.04
Abundance in Sun- / -1 / 0.01
Abundance in Meteorites60 / 7170 / 20
Abundance in Earth's Crust1200 / 1506000 / 820
Abundance in Oceans0.00022 / 0.0000080.00045 / 0.000019
Abundance in Humans- / -- / -

Crystal Structure and Atomic Structure

Atomic Volume18.753 cm3/mol19.98 cm3/mol
Atomic Radius226 pm238 pm
Covalent Radius- -
Van der Waals Radius- -
Atomic SpectrumAtomic Spectrum of Holmium | SchoolMyKidsAtomic Spectrum of Samarium | SchoolMyKids
Lattice Constant357.73, 357.73, 561.58 pm362.1, 362.1, 2625 pm
Lattice Angleπ/2, π/2, 2 π/3π/2, π/2, 2 π/3
Space Group NameP63/mmc R_ 3m
Space Group Number194 166
Crystal Structure

Simple Hexagonal

67 Ho Holmium - Crystal Structure | SchoolMyKids

Simple Trigonal

62 Sm Samarium - Crystal Structure | SchoolMyKids

Atomic and Orbital Properties

Atomic Number6762
Number of Electrons (with no charge)6762
Number of Protons6762
Mass Number164.93032150.36
Number of Neutrons9888
Shell structure (Electrons per energy level)2, 8, 18, 29, 8, 22, 8, 18, 24, 8, 2
Electron Configuration[Xe] 4f11 6s2 [Xe] 4f6 6s2
Valence Electrons4f11 6s2 4f6 6s2
Oxidation State33
Atomic Term Symbol (Quantum Numbers)4I15/2 7F0
Shell structure67 Ho Holmium - Electron Shell Structure | SchoolMyKids62 Sm Samarium - Electron Shell Structure | SchoolMyKids

Isotopes and Nuclear Properties

Holmium has 1 stable naturally occuring isotopes while Samarium has 5 stable naturally occuring isotopes.

Known Isotopes140Ho, 141Ho, 142Ho, 143Ho, 144Ho, 145Ho, 146Ho, 147Ho, 148Ho, 149Ho, 150Ho, 151Ho, 152Ho, 153Ho, 154Ho, 155Ho, 156Ho, 157Ho, 158Ho, 159Ho, 160Ho, 161Ho, 162Ho, 163Ho, 164Ho, 165Ho, 166Ho, 167Ho, 168Ho, 169Ho, 170Ho, 171Ho, 172Ho, 173Ho, 174Ho, 175Ho128Sm, 129Sm, 130Sm, 131Sm, 132Sm, 133Sm, 134Sm, 135Sm, 136Sm, 137Sm, 138Sm, 139Sm, 140Sm, 141Sm, 142Sm, 143Sm, 144Sm, 145Sm, 146Sm, 147Sm, 148Sm, 149Sm, 150Sm, 151Sm, 152Sm, 153Sm, 154Sm, 155Sm, 156Sm, 157Sm, 158Sm, 159Sm, 160Sm, 161Sm, 162Sm, 163Sm, 164Sm, 165Sm
Stable IsotopesNaturally occurring stable isotopes:

165Ho

Naturally occurring stable isotopes:

144Sm, 149Sm, 150Sm, 152Sm, 154Sm

Neutron Cross Section 65 5900
Neutron Mass Absorption 0.015 4.7

Chemical Properties: Ionization Energies and electron affinity

Valence or Valency3 3
Electronegativity1.23 Pauling Scale1.17 Pauling Scale
Electron Affinity50 kJ/mol50 kJ/mol
Ionization Energies
1st: 581 kJ/mol
2nd: 1140 kJ/mol
3rd: 2204 kJ/mol
4th: 4100 kJ/mol
1st: 544.5 kJ/mol
2nd: 1070 kJ/mol
3rd: 2260 kJ/mol
4th: 3990 kJ/mol

Physical Properties

Density8.795 g/cm37.353 g/cm3
Molar Volume18.753 cm3/mol19.98 cm3/mol

Elastic Properties

Young Modulus65 50
Shear Modulus26 GPa20 GPa
Bulk Modulus40 GPa38 GPa
Poisson Ratio0.23 0.27

Hardness - Tests to Measure of Hardness of Element

Mohs Hardness- -
Vickers Hardness481 MPa412 MPa
Brinell Hardness746 MPa441 MPa

Electrical Properties

Electrical Conductivity1100000 S/m1100000 S/m
Resistivity 9.4e-7 m Ω9.4e-7 m Ω
Superconducting Point- -

Heat and Conduction Properties

Thermal Conductivity16 W/(m K)13 W/(m K)
Thermal Expansion0.0000112 /K0.0000127 /K

Magnetic Properties

Magnetic TypeParamagnetic Paramagnetic
Curie Point20 K-
Mass Magnetic Susceptibility0.00000549 m3/kg1.11e-7 m3/kg
Molar Magnetic Susceptibility9.05467e-7 m3/mol1.669e-8 m3/mol
Volume Magnetic Susceptibility0.0482845 0.00081618

Optical Properties

Refractive Index- -

Acoustic Properties

Speed of Sound2760 m/s2130 m/s

Thermal Properties - Enthalpies and thermodynamics

Melting Point1747 K1345 K
Boiling Point2973 K2076 K
Critical Temperature- -
Superconducting Point- -

Enthalpies

Heat of Fusion17 kJ/mol8.6 kJ/mol
Heat of Vaporization265 kJ/mol175 kJ/mol
Heat of Combustion- -

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS NumberCAS7440-60-0 CAS7440-19-9
RTECS Number- -
DOT Hazard Class4.1 4.1
DOT Numbers3089 1325
EU Number- -
NFPA Fire Rating- 1
NFPA Hazards- -
NFPA Health Rating- 1
NFPA Reactivity Rating- 1
AutoIgnition Point- 150 °C
Flashpoint- -

Compare With Other Elements

Compare Holmium with all Group elements

Compare Holmium with all Period 6 elements

Compare Holmium with all Lanthanide elements

Compare Samarium with all Group elements

Compare Samarium with all Period 6 elements

Compare Samarium with all Lanthanide elements