CAS Number7440-70-2
PubChem CID5460341
Atomic Radius197
Atomic Volume29.9
Atomic Weight40.078
Boiling Point1484
Bulk Modulus
CategoryAlkaline earth metals
Crystal StructureFace Centered Cubic
Covalent Radius176
Electrical Resistivity
Electron Configuration[Ar] 4s2
Electrons per shell2, 8, 8, 2
Heat of Fusion8.54
Heat of Vaporization155
Ionization Potential6.1132
Magnetic Ordering
Magnetic Susceptibility
Mass Number20
Melting Point842
Atomic Number40
Oxidation States1, 2
Poisson Ratio
Shear Modulus
Specific Heat Capacity0.647
Thermal Conductivity2.01
Van der Waals radius
Young's Modulus
Abundance in Earth's crust5%
Abundance in Universe0.007%
Ca Kalsimi 20 40.078 2 4 s 20 839.0 1484.0 [Ar] 4s2 2 8 8 2 1.55 5% Silver Cubic: Face centered 1.0 1.034 {"1":"589.8","2":"1145.4","3":"4912.4","4":"6491","5":"8153","6":"10496","7":"12270","8":"14206","9":"18191","10":"20385","11":"57110","12":"63410","13":"70110","14":"78890","15":"86310","16":"94000","17":"104900","18":"111711","19":"494850","20":"527762"} 590 2.37 174 2 1.97 29.9 8.53 154.67 0.647 200.0 0 Solid, Paramagnetic, Conductor, AlkalineEarthMetal, Metal, Stable, Natural KAL-si-em Fairly hard, silvery-white metal. Fifth most abundant element in the earth's crust (41,500 ppm). Occurs only in compounds. Used by many forms of life to make shells and bones. Virtually no use for the pure metal, however two of its compounds are, lime (CaO) and gypsum (CaSO4), are in great demand by a number of industries. Obtained from minerals like chalk, limestone & marble. Pure metal is produced by replacing the calcium in lime (calcium carbonate, CaCO3) with aluminium in hot, low pressure retorts. Jcvac9__YN4 Calcium
Tennessine was identified in 2010 by a team composed of Russian scientists at Joint Institute for Nuclear Research, Dubna and American scientists at the Lawrence Livermore National Laboratory.

It was produced by the bombardment of berkelium with calcium.

Ununseptium was the temporary IUPAC systematic element name. Named after the region of Tennessee 20 1808 Sir Humphrey Davy England From the Latin word "calx" meaning "lime"

Isotopes of Tennessine

Standard Atomic Weight


Stable Isotopes

40Ca 42Ca 43Ca 44Ca 46Ca 48Ca

Unstable Isotopes

34Ca 35Ca 36Ca 37Ca 38Ca 39Ca 41Ca 45Ca 47Ca 49Ca 50Ca 51Ca 52Ca 53Ca 54Ca 55Ca 56Ca 57Ca

Tennessine is harmful due to its radioactivity
Tennessine is historically known as eka-astatine
Tennessine is used for scientific research purposes only.