Template:Infobox neodymium

Neodymium, ₆₀Nd
Neodymium
Pronunciation	/ˌniː.oʊˈdɪmiəm/ (NEE-oh-DIM-ee-əm)
Appearance	silvery white
Standard atomic weight Ar, std(Nd)	144.242(3)
Neodymium in the periodic cairt
	praseodymium ← neodymium → promethium
Atomic nummer (Z)	60
Group	group n/a
Period	period 6
Block	f-block
Element category	Lanthanide
Electron confeeguration	[Xe] 4f4 6s2
Electrons per shell	2, 8, 18, 22, 8, 2
Pheesical properties
Phase at STP	solid
Meltin pynt	1297 K (1024 °C, 1875 °F)
Bylin pynt	3347 K (3074 °C, 5565 °F)
Density (near r.t.)	7.01 g/cm3
when liquid (at m.p.)	6.89 g/cm3
Heat o fusion	7.14 kJ/mol
Heat o vapourisation	289 kJ/mol
Molar heat capacity	27.45 J/(mol·K)
Atomic properties
Oxidation states	0, +2, +3, +4 (a mildly basic oxide)
Electronegativity	Pauling scale: 1.14
Ionisation energies	1st: 533.1 kJ/mol ; 2nd: 1040 kJ/mol ; 3rd: 2130 kJ/mol ; ;
Atomic radius	empirical: 181 pm
Covalent radius	201±6 pm
	Colour lines in a spectral rangeSpectral lines o neodymium
Ither properties
Naitural occurrence	primordial
Creestal structur	dooble hexagonal close packed Dooble hexagonal close packed creestal structur for neodymium
Speed o soond thin rod	2330 m/s (at 20 °C)
Thermal expansion	α, poly: 9.6 µm/(m·K) (at r.t.)
Thermal conductivity	16.5 W/(m·K)
Electrical resistivity	α, poly: 643 nΩ·m
Magnetic orderin	paramagnetic, antiferromagnetic ablo 20 K
Magnetic susceptibility	+5628.0·10−6 cm3/mol (287.7 K)
Young's modulus	α form: 41.4 GPa
Shear modulus	α form: 16.3 GPa
Bulk modulus	α form: 31.8 GPa
Poisson ratio	α form: 0.281
Vickers haurdness	345–745 MPa
Brinell haurdness	265–700 MPa
CAS Nummer	7440-00-8
History
Diskivery	Carl Auer von Welsbach (1885)
Main isotopes o neodymium
	view; talk; edit; \| references

style="text-align:left"\| data m.p. cat v
	in	calc from C	diff	report	ref
C	1024	—	—
K	1297	1297	0
F	1875	1875	0
WD
input	C: 1024, K: 1297, F: 1875
comment

style="text-align:left"\| data b.p. cat v
	in	calc from C	diff	report	ref
C	3074	—	—
K	3347	3347	0
F	5565	5565	0
WD
input	C: 3074, K: 3347, F: 5565
comment

PTNeodymium

Pr ←	^iso ₆₀Nd E infobox E isobox	→ Pm
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References

↑ Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
↑ Yttrium and all lanthanides except Ce, Pm, Eu, Tm, Yb have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev. 22: 17–24. doi:10.1039/CS9932200017.
↑ Gschneidner, K. A.; Eyring, L. (1978). Handbook on the Physics and Chemistry of Rare Earths. Amsterdam: North Holland. ISBN 0444850228.
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

[CIAAW2013-1] Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.

[Cloke1993-2] Yttrium and all lanthanides except Ce, Pm, Eu, Tm, Yb have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev. 22: 17–24. doi:10.1039/CS9932200017.

[3] Gschneidner, K. A.; Eyring, L. (1978). Handbook on the Physics and Chemistry of Rare Earths. Amsterdam: North Holland. ISBN 0444850228.

[4] Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

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