name of calcium vs californium

calcium (chemical element) | californium (chemical element)

Periodic table location

Images

| calcium | californium atomic symbol | Ca | Cf atomic number | 20 | 98 short electronic configuration | [Ar]4s^2 | [Rn]7s^25f^10 Aufbau diagram | 4s | 5f 7s block | s | f group | 2 | period | 4 | 7 atomic mass | 40.078 u | 251 u half-life | (stable) | 901 yr

| calcium | californium phase at STP | solid | solid melting point | 842 °C | 900 °C boiling point | 1484 °C | molar heat of fusion | 8.54 kJ/mol | molar heat of vaporization | 155 kJ/mol | specific heat at STP | 631 J/(kg K) | (properties at standard conditions)

| calcium | californium density | 1.55 g/cm^3 | 15.1 g/cm^3 liquid density | 1.378 g/cm^3 | molar volume | 25.86 cm^3/mol | 16.6 cm^3/mol Mohs hardness | 1.75 (between gypsum and talc) | Brinell hardness | 167 MPa | bulk modulus | 17 GPa | shear modulus | 7.4 GPa | Young's modulus | 20 GPa | Poisson ratio | 0.31 | sound speed | 3810 m/s | thermal expansion | 2.23×10^-5 K^(-1) | thermal conductivity | 200 W/(m K) | (properties at standard conditions)

| calcium electrical type | conductor resistivity | 3.4×10^-8 Ω m (ohm meters) electrical conductivity | 2.9×10^7 S/m (siemens per meter) magnetic type | paramagnetic volume magnetic susceptibility | 2.139×10^-5 mass magnetic susceptibility | 1.38×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 5.531×10^-10 m^3/mol (cubic meters per mole) work function | 2.87 eV (Polycrystalline) threshold frequency | 6.94×10^14 Hz (hertz) color | (silver)

| calcium | californium valence | 2 | 4 electronegativity | 1 | 1.3 electron affinity | 2.37 kJ/mol (kilojoules per mole) | first ionization energy | 589.8 kJ/mol (kilojoules per mole) | 608 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 | 608 kJ/mol

Reactivity

| calcium | californium term symbol | ^1S_0 | ^5I_8 atomic radius | 180 pm | covalent radius | 176 pm | (electronic ground state properties)

| calcium | californium universe abundance | 0.007 mass% | solar abundance | 0.007 mass% | 0 mass% meteorite abundance | 1.1 mass% | 0 mass% crust abundance | 5 mass% | 0 mass% ocean abundance | 4.2×10^-4 mass% | 0 mass% human abundance | 1.4 mass% | 0 mass% universe molar abundance | 2×10^-4 mol% | solar molar abundance | 2×10^-4 mol% | 0 mol% meteorite molar abundance | 0.52 mol% | 0 mol% ocean molar abundance | 6.5×10^-5 mol% | 0 mol% crust molar abundance | 2.6 mol% | 0 mol% human molar abundance | 0.22 mol% | 0 mol%

| calcium | californium half-life | (stable) | 901 yr specific radioactivity | | 58.52 GBq/g decay mode | | alpha emission stable isotopes | Ca-40 (96.94%) | Ca-44 (2.09%) | Ca-42 (0.647%) | Ca-43 (0.135%) | Ca-46 (4×10^-5) | nuclear spin | Ca-34: 0^+ | Ca-35: 1/2^+ | Ca-36: 0^+ | Ca-37: 3/2^+ | Ca-38: 0^+ | Ca-39: 3/2^+ | Ca-40: 0^+ | Ca-41: 7/2^- | Ca-42: 0^+ | Ca-43: 7/2^- | Ca-44: 0^+ | Ca-45: 7/2^- | Ca-46: 0^+ | Ca-47: 7/2^- | Ca-48: 0^+ | Ca-49: 3/2^- | Ca-50: 0^+ | Ca-51: 3/2^- | Ca-52: 0^+ | Ca-54: 0^+ | Ca-55: 5/2^- | Ca-56: 0^+ | Ca-57: 5/2^- | Cf-237: 5/2^+ | Cf-238: 0^+ | Cf-239: 5/2^+ | Cf-240: 0^+ | Cf-241: 7/2^- | Cf-242: 0^+ | Cf-243: 1/2^+ | Cf-244: 0^+ | Cf-246: 0^+ | Cf-247: 7/2^+ | Cf-248: 0^+ | Cf-249: 9/2^- | Cf-250: 0^+ | Cf-251: 1/2^+ | Cf-252: 0^+ | Cf-253: 7/2^+ | Cf-254: 0^+ | Cf-255: 7/2^+ | Cf-256: 0^+ unstable isotopes | Ca-48 (1.9×10^19 yr) | Ca-41 (0.102 Myr) | Ca-45 (162.61 days) | Ca-47 (108.9 h) | Ca-49 (8.718 min) | Ca-50 (13.9 s) | Ca-51 (10 s) | Ca-52 (4.6 s) | Ca-39 (859.6 ms) | Ca-38 (440 ms) | Ca-37 (181.1 ms) | Ca-36 (102 ms) | Ca-53 (90 ms) | Ca-55 (30 ms) | Ca-35 (25.7 ms) | Ca-56 (10 ms) | Ca-57 (5 ms) | Ca-54 (300 ns) | Ca-34 (35 ns) | Cf-251 (898 yr) | Cf-249 (351 yr) | Cf-250 (13.08 yr) | Cf-252 (2.645 yr) | Cf-248 (333.5 days) | Cf-254 (60.5 days) | Cf-253 (17.81 days) | Cf-246 (35.7 h) | Cf-247 (187 min) | Cf-255 (85 min) | Cf-245 (45 min) | Cf-244 (19.4 min) | Cf-256 (12.3 min) | Cf-243 (10.7 min) | Cf-241 (227 s) | Cf-242 (220 s) | Cf-240 (57.6 s) | Cf-239 (39 s) | Cf-237 (2.1 s) | Cf-238 (21.1 ms) neutron cross-section | 0.43 b | 2900 b neutron mass absorption | 3.7×10^-4 m^2/kg |

| calcium | californium CAS number | 7440-70-2 | 7440-71-3 PubChem CID number | 5460341 | 23997