erbium vs ytterbium

erbium (chemical element) | ytterbium (chemical element)

Periodic table location

Images

| erbium | ytterbium atomic symbol | Er | Yb atomic number | 68 | 70 short electronic configuration | [Xe]6s^24f^12 | [Xe]6s^24f^14 Aufbau diagram | 4f 6s | 4f 6s block | f | f period | 6 | 6 atomic mass | 167.259 u | 173.045 u half-life | (stable) | (stable)

| erbium | ytterbium phase at STP | solid | solid melting point | 1497 °C | 819 °C boiling point | 2868 °C | 1196 °C molar heat of fusion | 19.9 kJ/mol | 7.7 kJ/mol molar heat of vaporization | 285 kJ/mol | 160 kJ/mol specific heat at STP | 168 J/(kg K) | 154 J/(kg K) Néel point | 82 K | (properties at standard conditions)

| erbium | ytterbium density | 9.066 g/cm^3 | 6.57 g/cm^3 liquid density | 8.86 g/cm^3 | 6.21 g/cm^3 molar volume | 18.45 cm^3/mol | 26.34 cm^3/mol Mohs hardness | 2 (between gypsum and talc) | Vickers hardness | 589 MPa | 206 MPa Brinell hardness | 814 MPa | 343 MPa bulk modulus | 44 GPa | 31 GPa shear modulus | 28 GPa | 9.9 GPa Young's modulus | 70 GPa | 24 GPa Poisson ratio | 0.24 | 0.21 tensile yield strength | 60 MPa | 66 MPa ultimate tensile strength | 136 MPa | 72 MPa sound speed | 2830 m/s | 1590 m/s thermal expansion | 1.22×10^-5 K^(-1) | 2.63×10^-5 K^(-1) thermal conductivity | 15 W/(m K) | 39 W/(m K) (properties at standard conditions)

| erbium | ytterbium electrical type | conductor | conductor resistivity | 8.6×10^-7 Ω m (ohm meters) | 2.8×10^-7 Ω m (ohm meters) electrical conductivity | 1.2×10^6 S/m (siemens per meter) | 3.6×10^6 S/m (siemens per meter) magnetic type | paramagnetic | paramagnetic volume magnetic susceptibility | 0.0341788 | 3.88×10^-5 mass magnetic susceptibility | 3.77×10^-6 m^3/kg (cubic meters per kilogram) | 5.9×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 6.30566×10^-7 m^3/mol (cubic meters per mole) | 1.02×10^-9 m^3/mol (cubic meters per mole) Curie point | 32 K (kelvins) | Néel point | 82 K (kelvins) | color | (silver) | (silver)

| erbium | ytterbium valence | 3 | 3 electronegativity | 1.24 | electron affinity | 50 kJ/mol (kilojoules per mole) | 50 kJ/mol (kilojoules per mole) first ionization energy | 589.3 kJ/mol (kilojoules per mole) | 603.4 kJ/mol (kilojoules per mole) ionization energies | 589.3 kJ/mol | 1150 kJ/mol | 2194 kJ/mol | 4120 kJ/mol | 603.4 kJ/mol | 1174.8 kJ/mol | 2417 kJ/mol | 4203 kJ/mol

Reactivity

| erbium | ytterbium term symbol | ^3H_6 | ^1S_0 atomic radius | 175 pm | 175 pm covalent radius | 189 pm | 187 pm (electronic ground state properties)

| erbium | ytterbium universe abundance | 2×10^-7 mass% | 2×10^-7 mass% solar abundance | 1×10^-7 mass% | 1×10^-7 mass% meteorite abundance | 1.8×10^-5 mass% | 1.8×10^-5 mass% crust abundance | 3×10^-4 mass% | 2.8×10^-4 mass% ocean abundance | 9×10^-11 mass% | 8×10^-11 mass% universe molar abundance | 1×10^-9 mol% | 1×10^-9 mol% solar molar abundance | 9.9×10^-10 mol% | 9.9×10^-10 mol% meteorite molar abundance | 2×10^-6 mol% | 2×10^-6 mol% ocean molar abundance | 3.3×10^-12 mol% | 2.9×10^-12 mol% crust molar abundance | 3.7×10^-5 mol% | 3.4×10^-5 mol%

| erbium | ytterbium half-life | (stable) | (stable) stable isotopes | Er-166 (33.503%) | Er-168 (26.978%) | Er-167 (22.869%) | Er-170 (14.91%) | Er-164 (1.601%) | Er-162 (0.139%) | Yb-174 (31.83%) | Yb-172 (21.83%) | Yb-173 (16.13%) | Yb-171 (14.28%) | Yb-176 (12.76%) | Yb-170 (3.04%) | Yb-168 (0.13%) nuclear spin | Er-143: 9/2^- | Er-144: 0^+ | Er-145: 1/2^+ | Er-146: 0^+ | Er-147: 11/2^- | Er-148: 0^+ | Er-149: 1/2^+ | Er-150: 0^+ | Er-151: 7/2^- | Er-152: 0^+ | Er-153: 7/2^- | Er-154: 0^+ | Er-155: 7/2^- | Er-156: 0^+ | Er-157: 3/2^- | Er-158: 0^+ | Er-159: 3/2^- | Er-160: 0^+ | Er-161: 3/2^- | Er-162: 0^+ | Er-163: 5/2^- | Er-164: 0^+ | Er-165: 5/2^- | Er-166: 0^+ | Er-167: 7/2^+ | Er-168: 0^+ | Er-169: 1/2^- | Er-170: 0^+ | Er-171: 5/2^- | Er-172: 0^+ | Er-173: 7/2^- | Er-174: 0^+ | Er-175: 9/2^+ | Er-176: 0^+ | Er-177: 1/2^- | Yb-148: 0^+ | Yb-150: 0^+ | Yb-151: 1/2^+ | Yb-152: 0^+ | Yb-153: 7/2^- | Yb-154: 0^+ | Yb-155: 7/2^- | Yb-156: 0^+ | Yb-157: 7/2^- | Yb-158: 0^+ | Yb-159: 5/2^- | Yb-160: 0^+ | Yb-161: 3/2^- | Yb-162: 0^+ | Yb-163: 3/2^- | Yb-164: 0^+ | Yb-165: 5/2^- | Yb-166: 0^+ | Yb-167: 5/2^- | Yb-168: 0^+ | Yb-169: 7/2^+ | Yb-170: 0^+ | Yb-171: 1/2^- | Yb-172: 0^+ | Yb-173: 5/2^- | Yb-174: 0^+ | Yb-175: 7/2^- | Yb-176: 0^+ | Yb-177: 9/2^+ | Yb-178: 0^+ | Yb-179: 1/2^- | Yb-180: 0^+ | Yb-181: 3/2^- unstable isotopes | Er-169 (9.4 days) | Er-172 (49.3 h) | Er-160 (28.58 h) | Er-165 (10.4 h) | Er-171 (7.5167 h) | Er-161 (193 min) | Er-158 (137.3 min) | Er-163 (75 min) | Er-159 (37 min) | Er-156 (19.5 min) | Er-157 (18.65 min) | Er-155 (5.33 min) | Er-154 (224 s) | Er-174 (190 s) | Er-173 (84 s) | Er-175 (72 s) | Er-153 (37.1 s) | Er-151 (23.5 s) | Er-176 (20 s) | Er-150 (18.5 s) | Er-152 (10.3 s) | Er-148 (4.6 s) | Er-149 (4 s) | Er-177 (3 s) | Er-147 (2.5 s) | Er-146 (1.7 s) | Er-145 (900 ms) | Er-143 (200 ms) | Er-144 (200 ns) | Yb-169 (32.03 days) | Yb-175 (100.4 h) | Yb-166 (56.7 h) | Yb-177 (114.7 min) | Yb-164 (75.83 min) | Yb-178 (73 min) | Yb-162 (18.87 min) | Yb-167 (17.5 min) | Yb-163 (11.05 min) | Yb-165 (9.83 min) | Yb-179 (8 min) | Yb-160 (4.83 min) | Yb-161 (4.17 min) | Yb-180 (140 s) | Yb-159 (100 s) | Yb-158 (89.4 s) | Yb-181 (60 s) | Yb-157 (38.6 s) | Yb-156 (26.1 s) | Yb-153 (4.2 s) | Yb-152 (3.04 s) | Yb-155 (1.793 s) | Yb-151 (1.6 s) | Yb-149 (700 ms) | Yb-154 (409 ms) | Yb-148 (250 ms) | Yb-150 (200 ns) neutron cross-section | 165 b | 35 b neutron mass absorption | 0.036 m^2/kg | 0.0076 m^2/kg

| erbium | ytterbium CAS number | 7440-52-0 | 7440-64-4 PubChem CID number | 23980 | 23992