ନିଓଡ଼ାଇମିଅମ

ଉଇକିପିଡ଼ିଆ ରୁ

| colspan=2 style="text-align: center" | Main article: Isotopes of neodymium

Neodymium
60Nd
-

Nd

U
praseodymiumneodymiumpromethium
ଭୌତିକ ରୁପ
silvery white
ସାଧାରଣ ଧର୍ମ
ନାମ, ପ୍ରତୀକ,
ପରମାଣୁ କ୍ରମାଙ୍କ
neodymium, Nd,
60
ଉଚ୍ଚାରଣ /ˌn.ɵˈdɪmiəm/
nee-o-dim-ee-əm
ମୌଳିକ ପ୍ରକାର lanthanide
ଶ୍ରେଣୀ, ପର୍ଯ୍ୟାୟ, ବ୍ଲକ୍ n/a, 6, f
ମାନକ ପରମାଣବିକ ଓଜନ 144.242
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ [Xe] 4f4 6s2
2, 8, 18, 22, 8, 2
Electron shells of neodymium (2, 8, 18, 22, 8, 2)
ଇତିହାସ
ଆବିଷ୍କାର Carl Auer von Welsbach (1885)
ଭୌତିକ ଧର୍ମ
ଅବସ୍ଥା solid
(ରୁମ୍ ଟେମ୍ପରେଚର୍‌ରେ ଘନତା) 7.01 g·cm−3
Liquid density at m.p. 6.89 g·cm−3
ଗଳନାଙ୍କ 1297 K, 1024 °C, 1875 °F
ସ୍ଫୁଟନାଙ୍କ 3347 K, 3074 °C, 5565 °F
Heat of fusion 7.14 kJ·mol−1
Heat of vaporization 289 kJ·mol−1
Molar heat capacity 27.45 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1595 1774 1998 (2296) (2715) (3336)
Atomic properties
Oxidation states 3, 2, 1

(mildly basic oxide)

Electronegativity 1.14 (Pauling scale)
Ionization energies 1st: 533.1 kJ·mol−1
2nd: 1040 kJ·mol−1
3rd: 2130 kJ·mol−1
Atomic radius 181 pm
Covalent radius 201±6 pm
Miscellanea
Crystal structure hexagonal
Magnetic ordering paramagnetic, antiferromagnetic below 20 K[୧]
Electrical resistivity (r.t.) (α, poly) 643 nΩ·m
Thermal conductivity 16.5 W·m−1·K−1
Thermal expansion (r.t.) (α, poly) 9.6 µm/(m·K)
Speed of sound (thin rod) (20 °C) 2330 m·s−1
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 hardness 343 MPa
Brinell hardness 265 MPa
CAS registry number 7440-00-8
Most stable isotopes
iso NA half-life DM DE (MeV) DP
142Nd 27.2% 142Nd is stable with 82 neutrons
143Nd 12.2% 143Nd is stable with 83 neutrons
144Nd 23.8% 2.29×1015 y α 1.905 140Ce
145Nd 8.3% >6×1016 y α 1.5784 141Ce
146Nd 17.2% 146Nd is stable with 86 neutrons
148Nd 5.7% >3.0×1018 y α 0.5986 144Ce
ββ 1.9288 148Sm
150Nd 5.6% 6.7×1018 y ββ 3.367 150Sm
· r

ନିଓଡ଼ାଇମିଅମ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Ndପରମାଣୁ କ୍ରମାଙ୍କ ୬୦ ଅଟେ ।

ଧର୍ମ[ସମ୍ପାଦନା]

ଉପସ୍ଥିତି[ସମ୍ପାଦନା]

ଗଠନ[ସମ୍ପାଦନା]

ଉତ୍ପାଦନ[ସମ୍ପାଦନା]

ସମସ୍ଥାନିକ[ସମ୍ପାଦନା]

ବ୍ୟବହାର[ସମ୍ପାଦନା]

ଆଧାର[ସମ୍ପାଦନା]

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

ଆହୁରି ପଢନ୍ତୁ[ସମ୍ପାଦନା]

  • "The Industrial Chemistry of the Lanthanons, Yttrium, Thorium and Uranium", by R.J. Callow, Pergamon Press 1967.
  • Lindsay Chemical Division, American Potash and Chemical Corporation, Price List, 1960.
  • "Chemistry of the Lanthanons", by R.C. Vickery, Butterworths 1953.

ବାହାର ଲିଙ୍କ[ସମ୍ପାଦନା]