arsenic vs scandium vs chromium

arsenic (chemical element) | scandium (chemical element) | chromium (chemical element)

Periodic table location

Images

| arsenic | scandium | chromium atomic symbol | As | Sc | Cr atomic number | 33 | 21 | 24 short electronic configuration | [Ar]4s^23d^104p^3 | [Ar]4s^23d^1 | [Ar]4s^13d^5 Aufbau diagram | 4p 3d 4s | 3d 4s | 3d 4s block | p | d | d group | 15 | 3 | 6 period | 4 | 4 | 4 atomic mass | 74.921595 u | 44.955908 u | 51.9961 u half-life | (stable) | (stable) | (stable)

| arsenic | scandium | chromium phase at STP | solid | solid | solid melting point | 817 °C | 1541 °C | 1907 °C boiling point | 614 °C | 2830 °C | 2671 °C molar heat of fusion | 27.7 kJ/mol | 16 kJ/mol | 20.5 kJ/mol molar heat of vaporization | 32.4 kJ/mol | 318 kJ/mol | 339 kJ/mol specific heat at STP | 328 J/(kg K) | 567 J/(kg K) | 448 J/(kg K) Néel point | | | 393 K (properties at standard conditions)

| arsenic | scandium | chromium density | 5.727 g/cm^3 | 2.985 g/cm^3 | 7.19 g/cm^3 liquid density | 5.22 g/cm^3 | 2.8 g/cm^3 | 6.3 g/cm^3 molar volume | 13.08 cm^3/mol | 15.06 cm^3/mol | 7.232 cm^3/mol Mohs hardness | 3.5 (between calcite and fluorite) | | 8.5 (between topaz and corundum) Vickers hardness | 1510 MPa | | 1060 MPa Brinell hardness | 1440 MPa | 750 MPa | 1120 MPa bulk modulus | 22 GPa | 57 GPa | 160 GPa shear modulus | | 29 GPa | 115 GPa Young's modulus | 8 GPa | 74 GPa | 279 GPa Poisson ratio | | 0.28 | 0.21 tensile yield strength | | 173 MPa | ultimate tensile strength | | 255 MPa | refractive index | 1.001552 | | sound speed | | | 5940 m/s thermal expansion | | 1.02×10^-5 K^(-1) | 4.9×10^-6 K^(-1) thermal conductivity | 50 W/(m K) | 16 W/(m K) | 94 W/(m K) (properties at standard conditions)

| arsenic | scandium | chromium electrical type | conductor | conductor | conductor resistivity | 3×10^-7 Ω m (ohm meters) | 5.5×10^-7 Ω m (ohm meters) | 1.3×10^-7 Ω m (ohm meters) electrical conductivity | 3.3×10^6 S/m (siemens per meter) | 1.8×10^6 S/m (siemens per meter) | 7.9×10^6 S/m (siemens per meter) magnetic type | diamagnetic | paramagnetic | antiferromagnetic volume magnetic susceptibility | -2.23×10^-5 | 2.627×10^-4 | 3.177×10^-4 mass magnetic susceptibility | -3.9×10^-9 m^3/kg (cubic meters per kilogram) | 8.8×10^-8 m^3/kg (cubic meters per kilogram) | 4.45×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | -2.92×10^-10 m^3/mol (cubic meters per mole) | 3.956×10^-9 m^3/mol (cubic meters per mole) | 2.314×10^-9 m^3/mol (cubic meters per mole) Néel point | | | 393 K (kelvins) work function | 3.75 eV (Polycrystalline) | 3.5 eV (Polycrystalline) | 4.5 eV (Polycrystalline) threshold frequency | 9.067×10^14 Hz (hertz) | 8.463×10^14 Hz (hertz) | 1.088×10^15 Hz (hertz) superconducting point | | 0.05 K (kelvins) | color | (silver) | (silver) | (silver) refractive index | 1.001552 | |

| arsenic | scandium | chromium valence | 5 | 3 | 6 electronegativity | 2.18 | 1.36 | 1.66 electron affinity | 78 kJ/mol (kilojoules per mole) | 18.1 kJ/mol (kilojoules per mole) | 64.3 kJ/mol (kilojoules per mole) first ionization energy | 947 kJ/mol (kilojoules per mole) | 633.1 kJ/mol (kilojoules per mole) | 652.9 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 | 633.1 kJ/mol | 1235 kJ/mol | 2388.6 kJ/mol | 7090.6 kJ/mol | 8843 kJ/mol | 10679 kJ/mol | 13310 kJ/mol | 15250 kJ/mol | 17370 kJ/mol | 21726 kJ/mol | 24102 kJ/mol | 66320 kJ/mol | 73010 kJ/mol | 80160 kJ/mol | 89490 kJ/mol | 97400 kJ/mol | 105600 kJ/mol | 117000 kJ/mol | 124270 kJ/mol | 547530 kJ/mol | 582163 kJ/mol | 652.9 kJ/mol | 1590.6 kJ/mol | 2987 kJ/mol | 4743 kJ/mol | 6702 kJ/mol | 8744.9 kJ/mol | 15455 kJ/mol | 17820 kJ/mol | 20190 kJ/mol | 23580 kJ/mol | 26130 kJ/mol | 28750 kJ/mol | 34230 kJ/mol | 37066 kJ/mol | 97510 kJ/mol | 105800 kJ/mol | 114300 kJ/mol | 125300 kJ/mol | 134700 kJ/mol | 144300 kJ/mol | 157700 kJ/mol

Reactivity

| arsenic | scandium | chromium term symbol | ^4S_(3/2) | ^2D_(3/2) | ^7S_3 atomic radius | 115 pm | 160 pm | 140 pm covalent radius | 119 pm | 170 pm | 139 pm van der Waals radius | 185 pm | | (electronic ground state properties)

| arsenic | scandium | chromium universe abundance | 8×10^-7 mass% | 3×10^-6 mass% | 0.0015 mass% solar abundance | | 4×10^-6 mass% | 0.002 mass% meteorite abundance | 1.8×10^-4 mass% | 6.4×10^-4 mass% | 0.3 mass% crust abundance | 2.1×10^-4 mass% | 0.0026 mass% | 0.014 mass% ocean abundance | 2.3×10^-7 mass% | 1.5×10^-10 mass% | 6×10^-8 mass% human abundance | 5×10^-6 mass% | | 3×10^-6 mass% universe molar abundance | 1×10^-8 mol% | 1×10^-7 mol% | 4×10^-5 mol% solar molar abundance | | 9.9×10^-8 mol% | 4×10^-5 mol% meteorite molar abundance | 4.6×10^-5 mol% | 2.9×10^-4 mol% | 0.12 mol% ocean molar abundance | 1.9×10^-8 mol% | 2.1×10^-11 mol% | 7.1×10^-9 mol% crust molar abundance | 5.8×10^-5 mol% | 0.0012 mol% | 0.0055 mol% human molar abundance | 4×10^-7 mol% | | 4×10^-7 mol%