Eigenschaften

CAS-Nummer7440-70-2
PubChem CID5460341
Atomradius197
Molares Volumen29,9
Atommasse40,078
Blocks
Siedepunkt1.484
Bulk Modulus
KategorieErdalkalimetalle
KristallstrukturKubisch flächenzentriert
FarbeSilber
Kovalenter Radius176
Dichte1,54
Electrical Resistivity
Elektronenkonfiguration[Ar] 4s2
Elektronen pro Schale2, 8, 8, 2
Elektronegativität1
Elektronen20
Gruppe2
Schmelzwärme8,54
Verdampfungswärme155
Ionisierungsenergie6,113
Magnetic Ordering
Magnetic Susceptibility
Masse40,078
Massenzahl20
Schmelzpunkt842
NameKalzium
Neutronen20
Ordnungszahl40
Oxidationszustände1, 2
Periode4
AggregatzustandFest
Poisson Ratio
Protonen20
Shear Modulus
Spezifische Wärmekapazität0,647
ElementsymbolCa
Wärmeleitfähigkeit2,01
Van der Waals Radius
Young's Modulus
Häufigkeit
Häufigkeit in der Erdkruste5%
Häufigkeit im Universum0.007%
Ca Kalzium 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

40.078(4)

Stabile Isotope

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

Instabile Isotope

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.