polonium vs barium vs tungsten

polonium (chemical element) | barium (chemical element) | tungsten (chemical element)

Periodic table location

Images

| polonium | barium | tungsten atomic symbol | Po | Ba | W atomic number | 84 | 56 | 74 short electronic configuration | [Xe]6s^24f^145d^106p^4 | [Xe]6s^2 | [Xe]6s^24f^145d^4 Aufbau diagram | 6p 5d 4f 6s | 6s | 5d 4f 6s block | p | s | d group | 16 | 2 | 6 period | 6 | 6 | 6 atomic mass | 209 u | 137.327 u | 183.84 u half-life | 102 yr | (stable) | (stable)

| polonium | barium | tungsten phase at STP | solid | solid | solid melting point | 254 °C | 727 °C | 3422 °C boiling point | 962 °C | 1870 °C | 5555 °C molar heat of fusion | 13 kJ/mol | 8 kJ/mol | 35 kJ/mol molar heat of vaporization | 100 kJ/mol | 140 kJ/mol | 800 kJ/mol specific heat at STP | | 205 J/(kg K) | 132 J/(kg K) (properties at standard conditions)

| polonium | barium | tungsten density | 9.196 g/cm^3 | 3.51 g/cm^3 | 19.25 g/cm^3 liquid density | | 3.338 g/cm^3 | 17.6 g/cm^3 molar volume | 22.7 cm^3/mol | 39.12 cm^3/mol | 9.55 cm^3/mol Mohs hardness | | 1.25 (between talc and gypsum) | 7.5 (between quartz and topaz) Vickers hardness | | (unknown) | 3430 MPa Brinell hardness | | | 2570 MPa bulk modulus | | 9.6 GPa | 310 GPa shear modulus | | 4.9 GPa | 161 GPa Young's modulus | | 13 GPa | 411 GPa Poisson ratio | | | 0.28 tensile yield strength | | | 750 MPa ultimate tensile strength | | | 0.98 GPa sound speed | | 1620 m/s | 5174 m/s thermal expansion | | 2.06×10^-5 K^(-1) | 4.5×10^-6 K^(-1) thermal conductivity | | 18 W/(m K) | 170 W/(m K) (properties at standard conditions)

| polonium | barium | tungsten electrical type | conductor | conductor | conductor resistivity | 4.3×10^-7 Ω m (ohm meters) | 3.5×10^-7 Ω m (ohm meters) | 5×10^-8 Ω m (ohm meters) electrical conductivity | 2.3×10^6 S/m (siemens per meter) | 2.9×10^6 S/m (siemens per meter) | 2×10^7 S/m (siemens per meter) magnetic type | | paramagnetic | paramagnetic volume magnetic susceptibility | | 3.966×10^-5 | 8.84×10^-5 mass magnetic susceptibility | | 1.13×10^-8 m^3/kg (cubic meters per kilogram) | 4.59×10^-9 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | | 1.552×10^-9 m^3/mol (cubic meters per mole) | 8.44×10^-10 m^3/mol (cubic meters per mole) work function | | 2.52 eV (Polycrystalline) | (4.32 to 5.22) eV threshold frequency | | 6.093×10^14 Hz (hertz) | (1.045×10^15 to 1.262×10^15) Hz (hertz) superconducting point | | (unknown) | 0.015 K (kelvins) color | (silver) | (silver) | (gray)

| polonium | barium | tungsten valence | 6 | 2 | 6 electronegativity | 2 | 0.89 | 2.36 electron affinity | 183.3 kJ/mol (kilojoules per mole) | 13.95 kJ/mol (kilojoules per mole) | 78.6 kJ/mol (kilojoules per mole) first ionization energy | 812.1 kJ/mol (kilojoules per mole) | 502.9 kJ/mol (kilojoules per mole) | 770 kJ/mol (kilojoules per mole) ionization energies | 812.1 kJ/mol | 502.9 kJ/mol | 965.2 kJ/mol | 3600 kJ/mol | 770 kJ/mol | 1700 kJ/mol

Reactivity

| polonium | barium | tungsten term symbol | ^3P_2 | ^1S_0 | ^5D_0 atomic radius | 190 pm | 215 pm | 135 pm covalent radius | 140 pm | 215 pm | 162 pm (electronic ground state properties)

| polonium | barium | tungsten universe abundance | | 1×10^-6 mass% | 5×10^-8 mass% solar abundance | | 1×10^-6 mass% | 4×10^-7 mass% meteorite abundance | | 2.7×10^-4 mass% | 1.2×10^-5 mass% crust abundance | | 0.034 mass% | 1.1×10^-4 mass% ocean abundance | 2×10^-18 mass% | 3×10^-6 mass% | 1.2×10^-8 mass% human abundance | 0 mass% | 3×10^-5 mass% | universe molar abundance | | 9×10^-9 mol% | 3×10^-10 mol% solar molar abundance | | 9.9×10^-9 mol% | 3×10^-9 mol% meteorite molar abundance | | 4.1×10^-5 mol% | 1×10^-6 mol% ocean molar abundance | 6×10^-6 mol% | 1.4×10^-7 mol% | 4×10^-10 mol% crust molar abundance | | 0.0051 mol% | 1.2×10^-5 mol% human molar abundance | 0 mol% | 1.4×10^-6 mol% |

| polonium | barium | tungsten half-life | 102 yr | (stable) | (stable) specific radioactivity | 621 GBq/g | | decay mode | alpha emission | | stable isotopes | | Ba-138 (71.698%) | Ba-137 (11.232%) | Ba-136 (7.854%) | Ba-135 (6.592%) | Ba-134 (2.417%) | Ba-130 (0.106%) | Ba-132 (0.101%) | W-184 (30.64%) | W-186 (28.43%) | W-182 (26.5%) | W-183 (14.31%) | W-180 (0.12%) nuclear spin | Po-188: 0^+ | Po-189: 7/2^- | Po-190: 0^+ | Po-191: 3/2^- | Po-192: 0^+ | Po-193: 3/2^- | Po-194: 0^+ | Po-195: 3/2^- | Po-196: 0^+ | Po-197: 3/2^- | Po-198: 0^+ | Po-199: 3/2^- | Po-200: 0^+ | Po-201: 3/2^- | Po-202: 0^+ | Po-203: 5/2^- | Po-204: 0^+ | Po-205: 5/2^- | Po-206: 0^+ | Po-207: 5/2^- | Po-208: 0^+ | Po-209: 1/2^- | Po-210: 0^+ | Po-211: 9/2^+ | Po-212: 0^+ | Po-213: 9/2^+ | Po-214: 0^+ | Po-215: 9/2^+ | Po-216: 0^+ | Po-217: 9/2^+ | Po-218: 0^+ | Po-219: 7/2^+ | Po-220: 0^+ | Ba-114: 0^+ | Ba-115: 5/2^+ | Ba-116: 0^+ | Ba-117: 3/2^+ | Ba-118: 0^+ | Ba-119: 5/2^+ | Ba-120: 0^+ | Ba-121: 5/2^+ | Ba-122: 0^+ | Ba-123: 5/2^+ | Ba-124: 0^+ | Ba-125: 1/2^+ | Ba-126: 0^+ | Ba-127: 1/2^+ | Ba-128: 0^+ | Ba-129: 1/2^+ | Ba-130: 0^+ | Ba-131: 1/2^+ | Ba-132: 0^+ | Ba-133: 1/2^+ | Ba-134: 0^+ | Ba-135: 3/2^+ | Ba-136: 0^+ | Ba-137: 3/2^+ | Ba-138: 0^+ | Ba-139: 7/2^- | Ba-140: 0^+ | Ba-141: 3/2^- | Ba-142: 0^+ | Ba-143: 5/2^- | Ba-144: 0^+ | Ba-145: 5/2^- | Ba-146: 0^+ | Ba-147: 3/2^+ | Ba-148: 0^+ | Ba-149: 3/2^- | Ba-150: 0^+ | Ba-151: 3/2^- | Ba-152: 0^+ | Ba-153: 5/2^- | W-158: 0^+ | W-159: 7/2^- | W-160: 0^+ | W-161: 7/2^- | W-162: 0^+ | W-163: 3/2^- | W-164: 0^+ | W-165: 5/2^- | W-166: 0^+ | W-167: 3/2^+ | W-168: 0^+ | W-169: 5/2^- | W-170: 0^+ | W-171: 5/2^- | W-172: 0^+ | W-173: 5/2^- | W-174: 0^+ | W-175: 1/2^- | W-176: 0^+ | W-177: 1/2^- | W-178: 0^+ | W-179: 7/2^- | W-180: 0^+ | W-181: 9/2^+ | W-182: 0^+ | W-183: 1/2^- | W-184: 0^+ | W-185: 3/2^- | W-186: 0^+ | W-187: 3/2^- | W-188: 0^+ | W-189: 3/2^- | W-190: 0^+ | W-191: 3/2^- | W-192: 0^+ unstable isotopes | Po-209 (102 yr) | Po-208 (2.898 yr) | Po-210 (138.376 days) | Po-206 (8.8 days) | Po-207 (5.8 h) | Po-204 (212 min) | Po-205 (104 min) | Po-202 (44.67 min) | Po-203 (37 min) | Po-201 (15.6 min) | Po-200 (11.5 min) | Po-199 (5.48 min) | Po-218 (185.9 s) | Po-198 (106 s) | Po-197 (84 s) | Po-196 (5.8 s) | Po-195 (4.64 s) | Po-217 (1.53 s) | Po-211 (516 ms) | Po-193 (420 ms) | Po-194 (392 ms) | Po-216 (145 ms) | Po-192 (33.2 ms) | Po-191 (22 ms) | Po-189 (3.5 ms) | Po-190 (2.46 ms) | Po-215 (1.781 ms) | Po-188 (400 µs) | Po-214 (164.3 µs) | Po-213 (3.72 µs) | Po-220 (300 ns) | Po-219 (300 ns) | Po-212 (299 ns) | Ba-133 (10.52 yr) | Ba-140 (12.752 days) | Ba-131 (11.5 days) | Ba-128 (58 h) | Ba-129 (133.8 min) | Ba-126 (100 min) | Ba-139 (83.06 min) | Ba-141 (18.27 min) | Ba-127 (12.7 min) | Ba-124 (11 min) | Ba-142 (10.6 min) | Ba-125 (210 s) | Ba-123 (160 s) | Ba-122 (117 s) | Ba-121 (29.7 s) | Ba-120 (24 s) | Ba-143 (14.5 s) | Ba-144 (11.5 s) | Ba-119 (5.4 s) | Ba-118 (5.5 s) | Ba-145 (4.31 s) | Ba-146 (2.22 s) | Ba-117 (1.75 s) | Ba-116 (1.3 s) | Ba-147 (893 ms) | Ba-148 (612 ms) | Ba-115 (450 ms) | Ba-114 (430 ms) | Ba-149 (344 ms) | Ba-150 (300 ms) | Ba-152 (100 ms) | Ba-153 (80 ms) | Ba-151 (300 ns) | W-181 (121.2 days) | W-185 (75.1 days) | W-188 (69.78 days) | W-178 (21.6 days) | W-187 (23.719 h) | W-176 (150 min) | W-177 (132 min) | W-179 (37.05 min) | W-175 (35.17 min) | W-174 (33.17 min) | W-190 (30 min) | W-189 (10.7 min) | W-173 (7.67 min) | W-172 (6.7 min) | W-170 (145 s) | W-171 (143 s) | W-169 (74 s) | W-168 (53 s) | W-191 (20 s) | W-167 (19.9 s) | W-166 (19.2 s) | W-192 (10 s) | W-164 (6.3 s) | W-165 (5.1 s) | W-163 (2.8 s) | W-162 (1.36 s) | W-161 (409 ms) | W-160 (90 ms) | W-159 (7.3 ms) | W-158 (1.25 ms) neutron cross-section | 0.5 b | 1.3 b | 18.4 b neutron mass absorption | | 2.7×10^-4 m^2/kg | 0.0036 m^2/kg

| polonium | barium | tungsten CAS number | 7440-08-6 | 7440-39-3 | 7440-33-7 PubChem CID number | | 5355457 | 23964