Chemicool
Nd
60
144.24
Neodymium
General
|
States
|
Energies
|
Oxidation & Electrons
|
Appearance & Characteristics
Reactions
|
Other Forms
|
Radius
|
Conductivity
|
Abundance
Encyclopedia Britannica articles
General
Name
Neodymium
Symbol
Nd
atomic number
60
Atomic weight
144.24
Density @ 293 K
7.0 g/cm3
Atomic volume
20.6 cm3/mol
Group
Rare Earth, Lanthanides
discovered
1885
States
state (s, l, g)
s
melting point
1283.2 K
boiling point
3300 K
Heat of fusion
7.140 kJ/mol
Heat of vaporization
273.0 kJ/mol
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Energies
1st ionization energy
529.6 kJ/mole
electronegativity
1.14
2nd ionization energy
1035 kJ/mole
electron affinity
50 kJ/mole
3rd ionization energy
2130 kJ/mole
Specific heat
0.19 J/gK
heat atomization
328 kJ/mole atoms
Oxidation & Electrons
Shells
2,8,18,22,8,2
electron configuration
[Xe] 4f4 6s2
minimum oxidation number
0
maximum oxidation number
3
min. common oxidation no.
0
max. common oxidation no.
3
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Appearance & Characteristics
structure
cp: close packed (ABCB)
color
silvery-white
uses
alloys, Welder's mask
toxicity
hardness
mohs
characteristics
Reactions
reaction with air
vigorous, w/ht = Nd2O3
reaction with 6M HCl
mild, = H2, NdCl3
reaction with 6M HCl
mild, = H2, NdCl3
reaction with 15M HNO3
mild, = Nd(NO3)3
reaction with 6M NaOH
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Other Forms
number of isotopes
7
hydride(s)
NdH2 NdH3
oxide(s)
Nd2O3
chloride(s)
NdCl2 NdCl3
Radius
ionic radius (2- ion)
pm
ionic radius (1- ion)
pm
atomic radius
181 pm
ionic radius (1+ ion)
pm
ionic radius (2+ ion)
pm
ionic radius (3+ ion)
112.3 pm
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Conductivity
thermal conductivity
16.5 J/m-sec-deg
electrical conductivity
15.4 1/mohm-cm
polarizability
31.4 A^3
Abundance
source
Monazite(phosphate),bastnaesite
rel. abund. solar system
-0.082 log
abundance earth's crust
1.4 log
cost, pure
110 $/100g
cost, bulk
$/100g
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