neodymium

neodymium (chemical element)

Periodic table location

Image

atomic symbol | Nd atomic number | 60 short electronic configuration | [Xe]6s^24f^4 Aufbau diagram | 4f 6s block | f period | 6 atomic mass | 144.242 u (unified atomic mass units)

phase at STP | solid melting point | 1021 °C (rank: 48th) boiling point | 3100 °C (rank: 31st) molar heat of fusion | 7.1 kJ/mol (rank: 61st) molar heat of vaporization | 285 kJ/mol (rank: 45th) specific heat at STP | 190 J/(kg K) (rank: 60th) Néel point | 19.2 K (properties at standard conditions)

density | 7.01 g/cm^3 (rank: 50th) liquid density | 6.89 g/cm^3 molar volume | 20.58 cm^3/mol Mohs hardness | 1.2 (between talc and gypsum) Vickers hardness | 343 MPa (rank: 38th) Brinell hardness | 265 MPa (rank: 42nd) bulk modulus | 32 GPa (rank: 48th) shear modulus | 16 GPa Young's modulus | 41 GPa (rank: 46th) Poisson ratio | 0.28 (rank: 27th) tensile yield strength | 165 MPa (rank: 12th) ultimate tensile strength | 170 MPa (rank: 16th) sound speed | 2330 m/s (rank: 47th) thermal expansion | 9.6×10^-6 K^(-1) (rank: 42nd) thermal conductivity | 17 W/(m K) (rank: 53rd) (properties at standard conditions)

electrical type | conductor resistivity | 6.4×10^-7 Ω m (ohm meters) electrical conductivity | 1.6×10^6 S/m (siemens per meter) magnetic type | paramagnetic volume magnetic susceptibility | 0.0033648 mass magnetic susceptibility | 4.8×10^-7 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 6.9235×10^-8 m^3/mol (cubic meters per mole) Néel point | 19.2 K (kelvins) work function | 3.2 eV (Polycrystalline) threshold frequency | 7.738×10^14 Hz (hertz) color | (silver)

valence | 3 electronegativity | 1.14 electron affinity | 50 kJ/mol (kilojoules per mole) first ionization energy | 533.1 kJ/mol (kilojoules per mole) ionization energies | 533.1 kJ/mol | 1040 kJ/mol | 2130 kJ/mol | 3900 kJ/mol

Reactivity

term symbol | ^5I_4 atomic radius | 185 pm covalent radius | 201 pm (electronic ground state properties)

(neutral neodymium atomic spectrum)

universe abundance | 1×10^-6 mass% (rank: 33rd) solar abundance | 3×10^-7 mass% (rank: 48th) meteorite abundance | 5×10^-5 mass% (rank: 47th) crust abundance | 0.0033 mass% (rank: 28th) ocean abundance | 2.8×10^-10 mass% (rank: 56th) universe molar abundance | 9×10^-9 mol% (rank: 42nd) solar molar abundance | 2×10^-9 mol% (rank: 50th) meteorite molar abundance | 7×10^-6 mol% (rank: 45th) ocean molar abundance | 1.2×10^-11 mol% (rank: 69th) crust molar abundance | 4.8×10^-4 mol% (rank: 35th)

half-life | (stable) stable isotopes | Nd-142 (27.2%) | Nd-146 (17.2%) | Nd-143 (12.2%) | Nd-145 (8.3%) | Nd-148 (5.7%) nuclear spin | Nd-124: 0^+ | Nd-125: 5/2^+ | Nd-126: 0^+ | Nd-127: 5/2^+ | Nd-128: 0^+ | Nd-129: 5/2^+ | Nd-130: 0^+ | Nd-131: 5/2^+ | Nd-132: 0^+ | Nd-133: 7/2^+ | Nd-134: 0^+ | Nd-135: 9/2^- | Nd-136: 0^+ | Nd-137: 1/2^+ | Nd-138: 0^+ | Nd-139: 3/2^+ | Nd-140: 0^+ | Nd-141: 3/2^+ | Nd-142: 0^+ | Nd-143: 7/2^- | Nd-144: 0^+ | Nd-145: 7/2^- | Nd-146: 0^+ | Nd-147: 5/2^- | Nd-148: 0^+ | Nd-149: 5/2^- | Nd-150: 0^+ | Nd-151: 3/2^+ | Nd-152: 0^+ | Nd-153: 3/2^- | Nd-154: 0^+ | Nd-155: 3/2^- | Nd-156: 0^+ | Nd-157: 5/2^- | Nd-158: 0^+ | Nd-159: 7/2^+ | Nd-160: 0^+ | Nd-161: 1/2^- unstable isotopes | Nd-150 (7.9×10^18 yr) | Nd-144 (2.29 quadrillion yr) | Nd-147 (10.98 days) | Nd-140 (80.8 h) | Nd-138 (5.03 h) | Nd-141 (149.3 min) | Nd-149 (103.7 min) | Nd-136 (50.67 min) | Nd-137 (38.5 min) | Nd-139 (29.67 min) | Nd-151 (12.44 min) | Nd-135 (12.4 min) | Nd-152 (11.4 min) | Nd-134 (8.5 min) | Nd-132 (93.6 s) | Nd-133 (70 s) | Nd-153 (31.6 s) | Nd-154 (25.9 s) | Nd-131 (25.4 s) | Nd-130 (21 s) | Nd-155 (8.9 s) | Nd-156 (5.49 s) | Nd-129 (4.9 s) | Nd-128 (5 s) | Nd-127 (1.8 s) | Nd-125 (600 ms) | Nd-159 (500 ms) | Nd-124 (500 ms) | Nd-160 (300 ms) | Nd-161 (200 ms) | Nd-126 (200 ns) | Nd-157 (100 ns) | Nd-158 (50 ns) neutron cross-section | 49 b neutron mass absorption | 0.011 m^2/kg

CAS number | 7440-00-8 PubChem CID number | 23934