Subject |
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has group |
bismuth | | | | | pnictogen | | | | | | ocean | | | | | | | | 103 years or less | | | | | | | | | | | III | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 15 |
cerium | | | | | lanthanide | | | | | | ocean | | | | | | | | 100 years | | | | | | | | | | | III | | | | | | | | | | | | | | | | | | | | | | | | | | | 4f | | | | | | | | | | a column number in the table of the elements |
cobalt | koh-bolt | P63/mmc for ε-Co | 37.2 barns | 82 GPa | atom | 35m to 64 | 382.4 kJ mol-1 | Georg Brandt | 100 W m-1 K-1 at 300 K | 1735 | in planet metallic core and associated with iron | kobald = goblin from German | 13.36 × 10-6 K-1 | 15.2 kJ mol-1 | foil, pieces, powder, rod and wire. Care ! | Zaire, Morocco, Sweden, Canada | 0.005 - 1.8 mg | 80 mg kg-1 chloride ingested by rat | 40 years | cobaltite, erythrite, glaucodot, linnaerite, skutterudite (smaltite) | 1768 K | 0.278 × 10-12 cm | | 116 pm | 4F9/2 in ground state | a = 250.7, c = 406.9 pm for ε-Co | 3 mg for a 70 kg average person | 0.32 GPa | | II | 211 GPa | | 23.020 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K | 181.5 GPa | 6.62 cm3 | lustrous, silvery-blue, hard metal which is also ferromagnetic. Cobalt 60 is an important radioisotope | 3143 K | compounds have low toxicity when ingested, but produce vomiting. Suspected carcinogen. | essential to most species, including humans | 82 pm for Co2+ | 6.24 × 10-8 Ω m at 293 K | 58.93320 in units of 12C = 12.000 | cobaltite, skutterudite | 63.8 kJ mol-1 from Co to Co- | 7670 kg m-3 for liquid at 293 K at melting point | 7440-48-4 for Chemical Abstracts System database | 125 pm | 27 | ferromagnetic | Stockholm, Sweden | 17 including nuclear isomers | 500 mg | 1.1 × 10-6 p.p.m. in deep Pacific seawater | 356.938 nm for Co I | dilute acids | cobalt 59 | | Co | magnet alloys, ceramics, catalysts and paints | h.c.p. for ε-Co | 17000 tonnes year-1 | [Ar]3d74s2 in ground state | 27 | 42.5 cm2 g-1 for MoKalpha X-ray diffraction | 0.028 - 0.65 p.p.m. in muscle | 1.88 Pauling | a column number in the table of the elements |
lead | | | | | atom | | | | | | ocean | | | | | | | | 50 years | | | | | | | | | | | II | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 14 |
manganese | man-gan-eez | I-43m for α-Mn | 13.3 barns | 79.5 GPa | atom | 49 to 62 | 219.7 kJ mol-1 | J.G. Gahn | 7.82 W m-1 K-1 at 300 K | 1774 (isolated) | in sulfide minerals | magnes = magnet from Latin or magnesia nigri = black magnesia (MnO2) | 22 × 10-6 K-1 | 14.4 kJ mol-1 | chips, flake or powder. Safe. | South Africa, Russia, Gabon, Australia, Brazil | 0.4 - 10 mg | 1715 mg kg-1 for chloride in mouse | 50 years | bixbyite, managanite, pyrolusite, rhodochrosite, rhodonite (jewelry), romanechite | 1517 K | -0.373 × 10-12 cm | | 117 pm | 6S5/2 in ground state | a = 891.39 pm for α-Mn | 12 mg for a 70 kg average person | 0.24 GPa | 3.6 × 109 tonnes (plus ocean floor nodules which are 24% Mn) | II | 191 GPa | | 20.79 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K | n.a. GPa | 7.38 cm3 | hard, brittle, silvery metal | 2235 K | compounds are experimental carcinogens and teratogens | essential to all species | 91 pm for Mn2+ | 185.0 × 10-8 Ω m at 298 K | 54.93805 in units of 12C = 12.000 | pyrolusite, romanechite (also known as psilomelane), manganite (useful but rare) | less than 0 kJ mol-1 from Mn to Mn- | 6430 kg m-3 for liquid at 2235 K melting point | 7439-96-5 for Chemical Abstracts System database | 124 pm | 25 | +1.21 × 10-7 kg-1 m3 for solid | Stockholm, Sweden | 15 including nuclear isomers | slighly toxic by ingestion | 0.4 × 10-4 p.p.m. in deep Pacific seawater | 403.449 nm for Mn I | dilute acids by dissolving | manganese 55 | | Mn | steel production, ceramics, feed supplements and fertilizer additives | b.c.c. for α-Mn | 6.22 × 106 tonnes year-1 | [Ar]3d54s2 in ground state | 25 | 34.7 cm2 g-1 for MoKalpha X-ray diffraction | 0.2 - 2.3 p.p.m. in muscle | 1.55 Pauling | a column number in the table of the elements |
mercury | | | | | atom | | | | | | ocean | | | | | | | | 103 years or less | | | | | | | | | | | II | | liquid at standard temperature and pressure | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | a column number in the table of the elements |
tellerium | | | | | atom | | | | | | ocean | | | | | | | | 103 years or less | | | | | | | | | | | VI some IV | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
thorium | | | | | atom | | | | | | ocean | | | | | | | | 50 years | | | | | | | | | | | IV | | | | | | | | | | | | | | | | | | 89 to 103 | | | | | | | | | 5f | | | | | | | | | | a column number in the table of the elements |
tin | | | | | atom | | | | | | ocean | | | | | | | | 103 years or less | | | | | | | | | | | IV | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 14 |