Properties

CAS Number7440-70-2
PubChem CID5460341
Ατομική ακτίνα197
Atomic Volume29,9
Ατομικό βάρος40,078
Τομέαςs
Σημείο βρασμού1.484
Bulk Modulus
ΚατηγορίαΑλκαλικές γαίες
Κρυσταλλικό σύστημαFace Centered Cubic
ΧρώμαSilver
Ομοιοπολική ακτίνα176
Πυκνότητα1,54
Electrical Resistivity
Ηλεκτρονική διαμόρφωση[Ar] 4s2
Electrons per shell2, 8, 8, 2
Ηλεκτραρνητικότητα1
Electrons20
Ομάδα2
Heat of Fusion8,54
Heat of Vaporization155
Ionization Potential6,113
Magnetic Ordering
Magnetic Susceptibility
Mass40,078
Mass Number20
Σημείο τήξης842
ΌνομαΑσβεστιο
Νετρονίων20
Ατομικός Αριθμός40
Oxidation States1, 2
Περίοδος4
PhaseΣτερεά
Poisson Ratio
Πρωτονίων20
Shear Modulus
Ειδική θερμοχωρητικότητα0,647
ΣύμβολοCa
Θερμική αγωγιμότητα2,01
Van der Waals radius
Young's Modulus
Abundance
Abundance in Earth's crust5%
Abundance in Universe0.007%
Ca Ασβεστιο 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)

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.