arsenic vs cobalt vs manganese

arsenic (chemical element) | cobalt (chemical element) | manganese (chemical element)

Periodic table location

Images

| arsenic | cobalt | manganese atomic symbol | As | Co | Mn atomic number | 33 | 27 | 25 short electronic configuration | [Ar]4s^23d^104p^3 | [Ar]4s^23d^7 | [Ar]4s^23d^5 Aufbau diagram | 4p 3d 4s | 3d 4s | 3d 4s block | p | d | d group | 15 | 9 | 7 period | 4 | 4 | 4 atomic mass | 74.921595 u | 58.933194 u | 54.938044 u half-life | (stable) | (stable) | (stable)

| arsenic | cobalt | manganese phase at STP | solid | solid | solid melting point | 817 °C | 1495 °C | 1246 °C boiling point | 614 °C | 2927 °C | 2061 °C molar heat of fusion | 27.7 kJ/mol | 16.2 kJ/mol | 13.2 kJ/mol molar heat of vaporization | 32.4 kJ/mol | 375 kJ/mol | 220 kJ/mol specific heat at STP | 328 J/(kg K) | 421 J/(kg K) | 479 J/(kg K) Néel point | | | 100 K (properties at standard conditions)

| arsenic | cobalt | manganese density | 5.727 g/cm^3 | 8.9 g/cm^3 | 7.47 g/cm^3 liquid density | 5.22 g/cm^3 | 7.75 g/cm^3 | 5.95 g/cm^3 molar volume | 13.08 cm^3/mol | 6.6 cm^3/mol | 7.354 cm^3/mol Mohs hardness | 3.5 (between calcite and fluorite) | 5 (≈ apatite) | 6 (≈ microcline) Vickers hardness | 1510 MPa | 1043 MPa | Brinell hardness | 1440 MPa | 700 MPa | 196 MPa bulk modulus | 22 GPa | 180 GPa | 120 GPa shear modulus | | 75 GPa | Young's modulus | 8 GPa | 209 GPa | 198 GPa Poisson ratio | | 0.31 | tensile yield strength | | 225 MPa | 241 MPa ultimate tensile strength | | | 496 MPa refractive index | 1.001552 | (unknown) | sound speed | | 4720 m/s | 5150 m/s thermal expansion | | 1.3×10^-5 K^(-1) | 2.17×10^-5 K^(-1) thermal conductivity | 50 W/(m K) | 100 W/(m K) | 7.8 W/(m K) (properties at standard conditions)

| arsenic | cobalt | manganese electrical type | conductor | conductor | conductor resistivity | 3×10^-7 Ω m (ohm meters) | 6×10^-8 Ω m (ohm meters) | 1.6×10^-6 Ω m (ohm meters) electrical conductivity | 3.3×10^6 S/m (siemens per meter) | 1.7×10^7 S/m (siemens per meter) | 620000 S/m (siemens per meter) magnetic type | diamagnetic | ferromagnetic | paramagnetic volume magnetic susceptibility | -2.23×10^-5 | | 9.0387×10^-4 mass magnetic susceptibility | -3.9×10^-9 m^3/kg (cubic meters per kilogram) | | 1.21×10^-7 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -2.92×10^-10 m^3/mol (cubic meters per mole) | | 6.6475×10^-9 m^3/mol (cubic meters per mole) Curie point | | 1394 K (kelvins) | Néel point | | | 100 K (kelvins) work function | 3.75 eV (Polycrystalline) | 5 eV (Polycrystalline) | 4.1 eV (Polycrystalline) threshold frequency | 9.067×10^14 Hz (hertz) | 1.209×10^15 Hz (hertz) | 9.914×10^14 Hz (hertz) color | (silver) | (gray) | (silver) refractive index | 1.001552 | (unknown) |

| arsenic | cobalt | manganese valence | 5 | 4 | 4 electronegativity | 2.18 | 1.88 | 1.55 electron affinity | 78 kJ/mol (kilojoules per mole) | 63.7 kJ/mol (kilojoules per mole) | 0 kJ/mol (kilojoules per mole) first ionization energy | 947 kJ/mol (kilojoules per mole) | 760.4 kJ/mol (kilojoules per mole) | 717.3 kJ/mol (kilojoules per mole) ionization energies | 947 kJ/mol | 1798 kJ/mol | 2735 kJ/mol | 4837 kJ/mol | 6043 kJ/mol | 12310 kJ/mol | 760.4 kJ/mol | 1648 kJ/mol | 3232 kJ/mol | 4950 kJ/mol | 7670 kJ/mol | 9840 kJ/mol | 12440 kJ/mol | 15230 kJ/mol | 17959 kJ/mol | 26570 kJ/mol | 29400 kJ/mol | 32400 kJ/mol | 36600 kJ/mol | 39700 kJ/mol | 42800 kJ/mol | 49396 kJ/mol | 52737 kJ/mol | 134810 kJ/mol | 145170 kJ/mol | 154700 kJ/mol | 167400 kJ/mol | 717.3 kJ/mol | 1509 kJ/mol | 3248 kJ/mol | 4940 kJ/mol | 6990 kJ/mol | 9220 kJ/mol | 11500 kJ/mol | 18770 kJ/mol | 21400 kJ/mol | 23960 kJ/mol | 27590 kJ/mol | 30330 kJ/mol | 33150 kJ/mol | 38880 kJ/mol | 41987 kJ/mol | 109480 kJ/mol | 118100 kJ/mol | 127100 kJ/mol | 138600 kJ/mol | 148500 kJ/mol | 158600 kJ/mol

Reactivity

| arsenic | cobalt | manganese term symbol | ^4S_(3/2) | ^4F_(9/2) | ^6S_(5/2) atomic radius | 115 pm | 135 pm | 140 pm covalent radius | 119 pm | 126 pm | 139 pm van der Waals radius | 185 pm | (unknown) | (electronic ground state properties)

| arsenic | cobalt | manganese universe abundance | 8×10^-7 mass% | 3×10^-4 mass% | 8×10^-4 mass% solar abundance | | 4×10^-4 mass% | 0.001 mass% meteorite abundance | 1.8×10^-4 mass% | 0.059 mass% | 0.27 mass% crust abundance | 2.1×10^-4 mass% | 0.003 mass% | 0.11 mass% ocean abundance | 2.3×10^-7 mass% | 8×10^-9 mass% | 2×10^-7 mass% human abundance | 5×10^-6 mass% | 2×10^-6 mass% | 2×10^-5 mass% universe molar abundance | 1×10^-8 mol% | 6×10^-6 mol% | 2×10^-5 mol% solar molar abundance | | 7×10^-6 mol% | 2×10^-5 mol% meteorite molar abundance | 4.6×10^-5 mol% | 0.02 mol% | 0.093 mol% ocean molar abundance | 1.9×10^-8 mol% | 8×10^-10 mol% | 2.3×10^-8 mol% crust molar abundance | 5.8×10^-5 mol% | 9.9×10^-4 mol% | 0.042 mol% human molar abundance | 4×10^-7 mol% | 2×10^-7 mol% | 2.3×10^-6 mol%