calcium vs arsenic vs titanium

calcium (chemical element) | arsenic (chemical element) | titanium (chemical element)

Periodic table location

Images

| calcium | arsenic | titanium atomic symbol | Ca | As | Ti atomic number | 20 | 33 | 22 short electronic configuration | [Ar]4s^2 | [Ar]4s^23d^104p^3 | [Ar]4s^23d^2 Aufbau diagram | 4s | 4p 3d 4s | 3d 4s block | s | p | d group | 2 | 15 | 4 period | 4 | 4 | 4 atomic mass | 40.078 u | 74.921595 u | 47.867 u half-life | (stable) | (stable) | (stable)

| calcium | arsenic | titanium phase at STP | solid | solid | solid melting point | 842 °C | 817 °C | 1668 °C boiling point | 1484 °C | 614 °C | 3287 °C molar heat of fusion | 8.54 kJ/mol | 27.7 kJ/mol | 18.7 kJ/mol molar heat of vaporization | 155 kJ/mol | 32.4 kJ/mol | 425 kJ/mol specific heat at STP | 631 J/(kg K) | 328 J/(kg K) | 520 J/(kg K) (properties at standard conditions)

| calcium | arsenic | titanium density | 1.55 g/cm^3 | 5.727 g/cm^3 | 4.507 g/cm^3 liquid density | 1.378 g/cm^3 | 5.22 g/cm^3 | 4.11 g/cm^3 molar volume | 25.86 cm^3/mol | 13.08 cm^3/mol | 10.62 cm^3/mol Mohs hardness | 1.75 (between gypsum and talc) | 3.5 (between calcite and fluorite) | 6 (≈ microcline) Vickers hardness | | 1510 MPa | 970 MPa Brinell hardness | 167 MPa | 1440 MPa | 716 MPa bulk modulus | 17 GPa | 22 GPa | 110 GPa shear modulus | 7.4 GPa | | 44 GPa Young's modulus | 20 GPa | 8 GPa | 116 GPa Poisson ratio | 0.31 | | 0.32 tensile yield strength | | | 140 MPa ultimate tensile strength | | | 220 MPa refractive index | | 1.001552 | sound speed | 3810 m/s | | 4140 m/s thermal expansion | 2.23×10^-5 K^(-1) | | 8.6×10^-6 K^(-1) thermal conductivity | 200 W/(m K) | 50 W/(m K) | 22 W/(m K) (properties at standard conditions)

| calcium | arsenic | titanium electrical type | conductor | conductor | conductor resistivity | 3.4×10^-8 Ω m (ohm meters) | 3×10^-7 Ω m (ohm meters) | 4×10^-7 Ω m (ohm meters) electrical conductivity | 2.9×10^7 S/m (siemens per meter) | 3.3×10^6 S/m (siemens per meter) | 2.5×10^6 S/m (siemens per meter) magnetic type | paramagnetic | diamagnetic | paramagnetic volume magnetic susceptibility | 2.139×10^-5 | -2.23×10^-5 | 1.807×10^-4 mass magnetic susceptibility | 1.38×10^-8 m^3/kg (cubic meters per kilogram) | -3.9×10^-9 m^3/kg (cubic meters per kilogram) | 4.01×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 5.531×10^-10 m^3/mol (cubic meters per mole) | -2.92×10^-10 m^3/mol (cubic meters per mole) | 1.919×10^-9 m^3/mol (cubic meters per mole) work function | 2.87 eV (Polycrystalline) | 3.75 eV (Polycrystalline) | 4.33 eV (Polycrystalline) threshold frequency | 6.94×10^14 Hz (hertz) | 9.067×10^14 Hz (hertz) | 1.047×10^15 Hz (hertz) superconducting point | | | 0.4 K (kelvins) color | (silver) | (silver) | (silver) refractive index | | 1.001552 |

| calcium | arsenic | titanium valence | 2 | 5 | 4 electronegativity | 1 | 2.18 | 1.54 electron affinity | 2.37 kJ/mol (kilojoules per mole) | 78 kJ/mol (kilojoules per mole) | 7.6 kJ/mol (kilojoules per mole) first ionization energy | 589.8 kJ/mol (kilojoules per mole) | 947 kJ/mol (kilojoules per mole) | 658.8 kJ/mol (kilojoules per mole) ionization energies | 589.8 kJ/mol | 1145.4 kJ/mol | 4912.4 kJ/mol | 6491 kJ/mol | 8153 kJ/mol | 10496 kJ/mol | 12270 kJ/mol | 14206 kJ/mol | 18191 kJ/mol | 20385 kJ/mol | 57110 kJ/mol | 947 kJ/mol | 1798 kJ/mol | 2735 kJ/mol | 4837 kJ/mol | 6043 kJ/mol | 12310 kJ/mol | 658.8 kJ/mol | 1309.8 kJ/mol | 2652.5 kJ/mol | 4174.6 kJ/mol | 9581 kJ/mol | 11533 kJ/mol | 13590 kJ/mol | 16440 kJ/mol | 18530 kJ/mol | 20833 kJ/mol | 25575 kJ/mol | 28125 kJ/mol | 76015 kJ/mol | 83280 kJ/mol | 90880 kJ/mol | 100700 kJ/mol | 109100 kJ/mol | 117800 kJ/mol | 129900 kJ/mol | 137530 kJ/mol | 602930 kJ/mol

Reactivity

| calcium | arsenic | titanium term symbol | ^1S_0 | ^4S_(3/2) | ^3F_2 atomic radius | 180 pm | 115 pm | 140 pm covalent radius | 176 pm | 119 pm | 160 pm van der Waals radius | | 185 pm | (electronic ground state properties)

| calcium | arsenic | titanium universe abundance | 0.007 mass% | 8×10^-7 mass% | 3×10^-4 mass% solar abundance | 0.007 mass% | | 4×10^-4 mass% meteorite abundance | 1.1 mass% | 1.8×10^-4 mass% | 0.054 mass% crust abundance | 5 mass% | 2.1×10^-4 mass% | 0.66 mass% ocean abundance | 4.2×10^-4 mass% | 2.3×10^-7 mass% | 1×10^-7 mass% human abundance | 1.4 mass% | 5×10^-6 mass% | universe molar abundance | 2×10^-4 mol% | 1×10^-8 mol% | 8×10^-6 mol% solar molar abundance | 2×10^-4 mol% | | 9.9×10^-6 mol% meteorite molar abundance | 0.52 mol% | 4.6×10^-5 mol% | 0.023 mol% ocean molar abundance | 6.5×10^-5 mol% | 1.9×10^-8 mol% | 1.3×10^-8 mol% crust molar abundance | 2.6 mol% | 5.8×10^-5 mol% | 0.29 mol% human molar abundance | 0.22 mol% | 4×10^-7 mol% |